wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity

Bug 1164693 - Part 1: Directional caret should point in caret direction in bidi paragraphs. r=smontagu

Browse Source
This commit is contained in:
Ted Clancy 2015-06-05 21:44:54 -04:00
parent c80a081510
commit 100cf0c0b0
6 changed files with 48 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
layout/base/nsCaret.cpp
View File

@ -115,9 +115,14 @@ AdjustCaretFrameForLineEnd(nsIFrame** aFrame, int32_t* aOffset)
}
static bool
IsBidiUI()
IsKeyboardRTL()
{
return Preferences::GetBool("bidi.browser.ui");
bool isKeyboardRTL = false;
nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard();
if (bidiKeyboard) {
bidiKeyboard->IsLangRTL(&isKeyboardRTL);
}
return isKeyboardRTL;
}
nsCaret::nsCaret()
@ -478,6 +483,21 @@ nsCaret::SetCaretPosition(nsIDOMNode* aNode, int32_t aOffset)
SchedulePaint();
}
bool
nsCaret::IsBidiUI()
{
nsIFrame* frame = nullptr;
if(Selection* selection = GetSelectionInternal()) {
int32_t contentOffset;
frame = GetFrameAndOffset(selection, mOverrideContent, mOverrideOffset,
&contentOffset);
}
return (frame && frame->GetStateBits() & NS_FRAME_IS_BIDI) ||
Preferences::GetBool("bidi.browser.ui");
}
void
nsCaret::CheckSelectionLanguageChange()
{
@ -485,11 +505,8 @@ nsCaret::CheckSelectionLanguageChange()
return;
}
bool isKeyboardRTL = false;
nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard();
if (bidiKeyboard) {
bidiKeyboard->IsLangRTL(&isKeyboardRTL);
}
bool isKeyboardRTL = IsKeyboardRTL();
// Call SelectionLanguageChange on every paint. Mostly it will be a noop
// but it should be fast anyway. This guarantees we never paint the caret
// at the wrong place.
@ -678,8 +695,9 @@ nsCaret::GetCaretFrameForNodeOffset(nsFrameSelection* aFrameSelection,
if (theFrame->PresContext()->BidiEnabled())
{
// If there has been a reflow, take the caret Bidi level to be the level of the current frame
if (aBidiLevel & BIDI_LEVEL_UNDEFINED)
if (aBidiLevel & BIDI_LEVEL_UNDEFINED) {
aBidiLevel = NS_GET_EMBEDDING_LEVEL(theFrame);
}
int32_t start;
int32_t end;
@ -902,21 +920,22 @@ nsCaret::ComputeCaretRects(nsIFrame* aFrame, int32_t aFrameOffset,
}
}
// Simon -- make a hook to draw to the left or right of the caret to show keyboard language direction
aHookRect->SetEmpty();
if (!IsBidiUI()) {
Selection* selection = GetSelectionInternal();
if (!selection || !selection->GetFrameSelection()) {
return;
}
bool isCaretRTL;
nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard();
// if bidiKeyboard->IsLangRTL() fails, there is no way to tell the
// keyboard direction, or the user has no right-to-left keyboard
// installed, so we never draw the hook.
if (bidiKeyboard && NS_SUCCEEDED(bidiKeyboard->IsLangRTL(&isCaretRTL))) {
// If keyboard language is RTL, draw the hook on the left; if LTR, to the right
if (IsBidiUI() || IsKeyboardRTL()) {
// If caret level is RTL, draw the hook on the left; if LTR, to the right
// The height of the hook rectangle is the same as the width of the caret
// rectangle.
int caretBidiLevel = selection->GetFrameSelection()->GetCaretBidiLevel();
if (caretBidiLevel & BIDI_LEVEL_UNDEFINED) {
caretBidiLevel = NS_GET_EMBEDDING_LEVEL(aFrame);
}
bool isCaretRTL = caretBidiLevel % 2;
if (isVertical) {
aHookRect->SetRect(aCaretRect->XMost() - bidiIndicatorSize,
aCaretRect->y + (isCaretRTL ? bidiIndicatorSize * -1 :

1
layout/base/nsCaret.h
View File

@ -158,6 +158,7 @@ class nsCaret final : public nsISelectionListener
protected:
static void CaretBlinkCallback(nsITimer *aTimer, void *aClosure);
bool IsBidiUI();
void CheckSelectionLanguageChange();
void ResetBlinking();

3
layout/base/tests/bug646382-1-ref.html
View File

@ -3,13 +3,14 @@
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body onload="start()">
<textarea onfocus="done()" style="-moz-appearance: none">س</textarea>
<textarea onfocus="done()" style="-moz-appearance: none">س&lrm;</textarea>
<script>
var textarea = document.querySelector("textarea");
function start() {
textarea.focus();
}
function done() {
textarea.selectionStart = textarea.selectionEnd = 2;
document.documentElement.removeAttribute("class");
}
</script>

3
layout/base/tests/bug646382-2-ref.html
View File

@ -1,12 +1,13 @@
<html class="reftest-wait">
<body onload="start()">
<textarea dir="rtl" onfocus="done()" style="-moz-appearance: none">s</textarea>
<textarea dir="rtl" onfocus="done()" style="-moz-appearance: none">s&rlm;</textarea>
<script>
var textarea = document.querySelector("textarea");
function start() {
textarea.focus();
}
function done() {
textarea.selectionStart = textarea.selectionEnd = 2;
document.documentElement.removeAttribute("class");
}
</script>

4
layout/generic/nsFrameSelection.h
View File

@ -621,7 +621,9 @@ private:
uint32_t aContentOffset,
nsSelectionAmount aAmount,
CaretAssociateHint aHint);
void BidiLevelFromClick(nsIContent *aNewFocus, uint32_t aContentOffset);
void BidiLevelFromClick(nsIContent *aNewFocus,
uint32_t aContentOffset,
CaretAssociateHint aHint);
nsPrevNextBidiLevels GetPrevNextBidiLevels(nsIContent *aNode,
uint32_t aContentOffset,
CaretAssociateHint aHint,

7
layout/generic/nsSelection.cpp
View File

@ -1431,12 +1431,13 @@ void nsFrameSelection::BidiLevelFromMove(nsIPresShell* aPresShell,
* @param aContentOffset is the new caret position, as an offset into aNode
*/
void nsFrameSelection::BidiLevelFromClick(nsIContent *aNode,
uint32_t aContentOffset)
uint32_t aContentOffset,
CaretAssociateHint aHint)
{
nsIFrame* clickInFrame=nullptr;
int32_t OffsetNotUsed;
clickInFrame = GetFrameForNodeOffset(aNode, aContentOffset, mHint, &OffsetNotUsed);
clickInFrame = GetFrameForNodeOffset(aNode, aContentOffset, aHint, &OffsetNotUsed);
if (!clickInFrame)
return;
@ -1515,7 +1516,7 @@ nsFrameSelection::HandleClick(nsIContent* aNewFocus,
// Don't take focus when dragging off of a table
if (!mDragSelectingCells)
{
BidiLevelFromClick(aNewFocus, aContentOffset);
BidiLevelFromClick(aNewFocus, aContentOffset, aHint);
PostReason(nsISelectionListener::MOUSEDOWN_REASON + nsISelectionListener::DRAG_REASON);
if (aContinueSelection &&
AdjustForMaintainedSelection(aNewFocus, aContentOffset))