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Editor.cxx
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Editor.cxx
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// Scintilla source code edit control
/** @file Editor.cxx
** Main code for the edit control.
**/
// Copyright 1998-2011 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <cstddef>
#include <cstdlib>
#include <cassert>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <stdexcept>
#include <string>
#include <string_view>
#include <vector>
#include <map>
#include <forward_list>
#include <algorithm>
#include <iterator>
#include <memory>
#include <chrono>
#include "Platform.h"
#include "ILoader.h"
#include "ILexer.h"
#include "Scintilla.h"
#include "CharacterSet.h"
#include "Position.h"
#include "UniqueString.h"
#include "SplitVector.h"
#include "Partitioning.h"
#include "RunStyles.h"
#include "ContractionState.h"
#include "CellBuffer.h"
#include "PerLine.h"
#include "KeyMap.h"
#include "Indicator.h"
#include "LineMarker.h"
#include "Style.h"
#include "ViewStyle.h"
#include "CharClassify.h"
#include "Decoration.h"
#include "CaseFolder.h"
#include "Document.h"
#include "UniConversion.h"
#include "Selection.h"
#include "PositionCache.h"
#include "EditModel.h"
#include "MarginView.h"
#include "EditView.h"
#include "Editor.h"
#include "ElapsedPeriod.h"
using namespace Scintilla;
/*
return whether this modification represents an operation that
may reasonably be deferred (not done now OR [possibly] at all)
*/
static inline bool CanDeferToLastStep(const DocModification &mh) noexcept {
if (mh.modificationType & (SC_MOD_BEFOREINSERT | SC_MOD_BEFOREDELETE))
return true; // CAN skip
if (!(mh.modificationType & (SC_PERFORMED_UNDO | SC_PERFORMED_REDO)))
return false; // MUST do
if (mh.modificationType & SC_MULTISTEPUNDOREDO)
return true; // CAN skip
return false; // PRESUMABLY must do
}
static inline bool CanEliminate(const DocModification &mh) noexcept {
return
(mh.modificationType & (SC_MOD_BEFOREINSERT | SC_MOD_BEFOREDELETE)) != 0;
}
/*
return whether this modification represents the FINAL step
in a [possibly lengthy] multi-step Undo/Redo sequence
*/
static inline bool IsLastStep(const DocModification &mh) noexcept {
return
(mh.modificationType & (SC_PERFORMED_UNDO | SC_PERFORMED_REDO)) != 0
&& (mh.modificationType & SC_MULTISTEPUNDOREDO) != 0
&& (mh.modificationType & SC_LASTSTEPINUNDOREDO) != 0
&& (mh.modificationType & SC_MULTILINEUNDOREDO) != 0;
}
Timer::Timer() noexcept :
ticking(false), ticksToWait(0), tickerID{} {}
Idler::Idler() noexcept :
state(false), idlerID(nullptr) {}
static inline bool IsAllSpacesOrTabs(const char *s, unsigned int len) noexcept {
for (unsigned int i = 0; i < len; i++) {
// This is safe because IsSpaceOrTab() will return false for null terminators
if (!IsSpaceOrTab(s[i]))
return false;
}
return true;
}
Editor::Editor() : durationWrapOneLine(0.00001, 0.000001, 0.0001) {
ctrlID = 0;
stylesValid = false;
technology = SC_TECHNOLOGY_DEFAULT;
scaleRGBAImage = 100.0f;
cursorMode = SC_CURSORNORMAL;
hasFocus = false;
errorStatus = 0;
mouseDownCaptures = true;
mouseWheelCaptures = true;
lastClickTime = 0;
doubleClickCloseThreshold = Point(3, 3);
dwellDelay = SC_TIME_FOREVER;
ticksToDwell = SC_TIME_FOREVER;
dwelling = false;
ptMouseLast.x = 0;
ptMouseLast.y = 0;
inDragDrop = ddNone;
dropWentOutside = false;
posDrop = SelectionPosition(Sci::invalidPosition);
hotSpotClickPos = INVALID_POSITION;
selectionType = selChar;
lastXChosen = 0;
lineAnchorPos = 0;
originalAnchorPos = 0;
wordSelectAnchorStartPos = 0;
wordSelectAnchorEndPos = 0;
wordSelectInitialCaretPos = -1;
caretXPolicy = CARET_SLOP | CARET_EVEN;
caretXSlop = 50;
caretYPolicy = CARET_EVEN;
caretYSlop = 0;
visiblePolicy = 0;
visibleSlop = 0;
searchAnchor = 0;
xCaretMargin = 50;
horizontalScrollBarVisible = true;
scrollWidth = 2000;
verticalScrollBarVisible = true;
endAtLastLine = true;
caretSticky = SC_CARETSTICKY_OFF;
marginOptions = SC_MARGINOPTION_NONE;
mouseSelectionRectangularSwitch = false;
multipleSelection = false;
additionalSelectionTyping = false;
multiPasteMode = SC_MULTIPASTE_ONCE;
virtualSpaceOptions = SCVS_NONE;
targetStart = 0;
targetEnd = 0;
searchFlags = 0;
topLine = 0;
posTopLine = 0;
lengthForEncode = -1;
needUpdateUI = 0;
ContainerNeedsUpdate(SC_UPDATE_CONTENT);
paintState = notPainting;
paintAbandonedByStyling = false;
paintingAllText = false;
willRedrawAll = false;
idleStyling = SC_IDLESTYLING_NONE;
needIdleStyling = false;
modEventMask = SC_MODEVENTMASKALL;
commandEvents = true;
pdoc->AddWatcher(this, nullptr);
recordingMacro = false;
foldAutomatic = 0;
convertPastes = true;
SetRepresentations();
}
Editor::~Editor() {
pdoc->RemoveWatcher(this, nullptr);
DropGraphics(true);
}
void Editor::Finalise() noexcept {
SetIdle(false);
CancelModes();
}
void Editor::SetRepresentations() {
reprs.Clear();
// C0 control set
static const char * const reps[] = {
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
"BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI",
"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US"
};
for (size_t j = 0; j < std::size(reps); j++) {
const char c[2] = { static_cast<char>(j), 0 };
reprs.SetRepresentation(c, reps[j]);
}
// C1 control set
// As well as Unicode mode, ISO-8859-1 should use these
if (IsUnicodeMode()) {
static const char * const repsC1[] = {
"PAD", "HOP", "BPH", "NBH", "IND", "NEL", "SSA", "ESA",
"HTS", "HTJ", "VTS", "PLD", "PLU", "RI", "SS2", "SS3",
"DCS", "PU1", "PU2", "STS", "CCH", "MW", "SPA", "EPA",
"SOS", "SGCI", "SCI", "CSI", "ST", "OSC", "PM", "APC"
};
for (size_t j = 0; j < std::size(repsC1); j++) {
const char c1[3] = { '\xc2', static_cast<char>(0x80 + j), 0 };
reprs.SetRepresentation(c1, repsC1[j]);
}
reprs.SetRepresentation("\xe2\x80\xa8", "LS");
reprs.SetRepresentation("\xe2\x80\xa9", "PS");
}
// UTF-8 invalid bytes
if (IsUnicodeMode()) {
for (int k = 0x80; k < 0x100; k++) {
const char hiByte[2] = { static_cast<char>(k), 0 };
char hexits[5]; // Really only needs 4 but that causes warning from gcc 7.1
sprintf(hexits, "x%2X", k);
reprs.SetRepresentation(hiByte, hexits);
}
} else if (pdoc->dbcsCodePage) {
// DBCS invalid single lead bytes
for (int k = 0x80; k < 0x100; k++) {
const char ch = static_cast<char>(k);
if (pdoc->IsDBCSLeadByteNoExcept(ch) || pdoc->IsDBCSLeadByteInvalid(ch)) {
const char hiByte[2] = { ch, 0 };
char hexits[5]; // Really only needs 4 but that causes warning from gcc 7.1
sprintf(hexits, "x%2X", k);
reprs.SetRepresentation(hiByte, hexits);
}
}
}
}
void Editor::DropGraphics(bool freeObjects) noexcept {
marginView.DropGraphics(freeObjects);
view.DropGraphics(freeObjects);
}
void Editor::AllocateGraphics() {
marginView.AllocateGraphics(vs);
view.AllocateGraphics(vs);
}
void Editor::InvalidateStyleData() {
stylesValid = false;
vs.technology = technology;
DropGraphics(false);
AllocateGraphics();
view.llc.Invalidate(LineLayout::llInvalid);
view.posCache.Clear();
}
void Editor::InvalidateStyleRedraw() {
NeedWrapping();
InvalidateStyleData();
Redraw();
}
void Editor::RefreshStyleData() {
if (!stylesValid) {
stylesValid = true;
AutoSurface surface(this);
if (surface) {
vs.Refresh(*surface, pdoc->tabInChars);
}
SetScrollBars();
SetRectangularRange();
}
}
Point Editor::GetVisibleOriginInMain() const noexcept {
return Point(0, 0);
}
PointDocument Editor::DocumentPointFromView(Point ptView) const noexcept {
PointDocument ptDocument(ptView);
if (wMargin.GetID()) {
const Point ptOrigin = GetVisibleOriginInMain();
ptDocument.x += ptOrigin.x;
ptDocument.y += ptOrigin.y;
} else {
ptDocument.x += xOffset;
ptDocument.y += topLine * vs.lineHeight;
}
return ptDocument;
}
Sci::Line Editor::TopLineOfMain() const noexcept {
if (wMargin.GetID())
return 0;
else
return topLine;
}
PRectangle Editor::GetClientRectangle() const noexcept {
return wMain.GetClientPosition();
}
PRectangle Editor::GetClientDrawingRectangle() const noexcept {
return GetClientRectangle();
}
PRectangle Editor::GetTextRectangle() const noexcept {
PRectangle rc = GetClientRectangle();
rc.left += vs.textStart;
rc.right -= vs.rightMarginWidth;
return rc;
}
Sci::Line Editor::LinesOnScreen() const noexcept {
const PRectangle rcClient = GetClientRectangle();
const int htClient = static_cast<int>(rcClient.bottom - rcClient.top);
//Platform::DebugPrintf("lines on screen = %d\n", htClient / lineHeight + 1);
return htClient / vs.lineHeight;
}
Sci::Line Editor::LinesToScroll() const noexcept {
const Sci::Line retVal = LinesOnScreen() - 1;
if (retVal < 1)
return 1;
else
return retVal;
}
Sci::Line Editor::MaxScrollPos() const noexcept {
//Platform::DebugPrintf("Lines %d screen = %d maxScroll = %d\n",
//LinesTotal(), LinesOnScreen(), LinesTotal() - LinesOnScreen() + 1);
Sci::Line retVal = pcs->LinesDisplayed();
if (endAtLastLine) {
retVal -= LinesOnScreen();
} else {
retVal--;
}
if (retVal < 0) {
return 0;
} else {
return retVal;
}
}
SelectionPosition Editor::ClampPositionIntoDocument(SelectionPosition sp) const noexcept {
if (sp.Position() < 0) {
return SelectionPosition(0);
} else if (sp.Position() > pdoc->Length()) {
return SelectionPosition(pdoc->Length());
} else {
// If not at end of line then set offset to 0
if (!pdoc->IsLineEndPosition(sp.Position()))
sp.SetVirtualSpace(0);
return sp;
}
}
Point Editor::LocationFromPosition(SelectionPosition pos, PointEnd pe) {
const PRectangle rcClient = GetTextRectangle();
RefreshStyleData();
AutoSurface surface(this);
return view.LocationFromPosition(surface, *this, pos, topLine, vs, pe, rcClient);
}
Point Editor::LocationFromPosition(Sci::Position pos, PointEnd pe) {
return LocationFromPosition(SelectionPosition(pos), pe);
}
int Editor::XFromPosition(SelectionPosition sp) {
const Point pt = LocationFromPosition(sp);
return static_cast<int>(pt.x) - vs.textStart + xOffset;
}
SelectionPosition Editor::SPositionFromLocation(Point pt, bool canReturnInvalid, bool charPosition, bool virtualSpace) {
RefreshStyleData();
AutoSurface surface(this);
PRectangle rcClient = GetTextRectangle();
// May be in scroll view coordinates so translate back to main view
const Point ptOrigin = GetVisibleOriginInMain();
rcClient.Move(-ptOrigin.x, -ptOrigin.y);
if (canReturnInvalid) {
if (!rcClient.Contains(pt))
return SelectionPosition(INVALID_POSITION);
if (pt.x < vs.textStart)
return SelectionPosition(INVALID_POSITION);
if (pt.y < 0)
return SelectionPosition(INVALID_POSITION);
}
const PointDocument ptdoc = DocumentPointFromView(pt);
return view.SPositionFromLocation(surface, *this, ptdoc, canReturnInvalid,
charPosition, virtualSpace, vs, rcClient);
}
Sci::Position Editor::PositionFromLocation(Point pt, bool canReturnInvalid, bool charPosition) {
return SPositionFromLocation(pt, canReturnInvalid, charPosition, false).Position();
}
/**
* Find the document position corresponding to an x coordinate on a particular document line.
* Ensure is between whole characters when document is in multi-byte or UTF-8 mode.
* This method is used for rectangular selections and does not work on wrapped lines.
*/
SelectionPosition Editor::SPositionFromLineX(Sci::Line lineDoc, int x) {
RefreshStyleData();
if (lineDoc >= pdoc->LinesTotal())
return SelectionPosition(pdoc->Length());
//Platform::DebugPrintf("Position of (%d,%d) line = %d top=%d\n", pt.x, pt.y, line, topLine);
AutoSurface surface(this);
return view.SPositionFromLineX(surface, *this, lineDoc, x, vs);
}
Sci::Position Editor::PositionFromLineX(Sci::Line lineDoc, int x) {
return SPositionFromLineX(lineDoc, x).Position();
}
Sci::Line Editor::LineFromLocation(Point pt) const noexcept {
return pcs->DocFromDisplay(static_cast<int>(pt.y) / vs.lineHeight + topLine);
}
void Editor::SetTopLine(Sci::Line topLineNew) noexcept {
if ((topLine != topLineNew) && (topLineNew >= 0)) {
topLine = topLineNew;
ContainerNeedsUpdate(SC_UPDATE_V_SCROLL);
}
posTopLine = pdoc->LineStart(pcs->DocFromDisplay(topLine));
}
/**
* If painting then abandon the painting because a wider redraw is needed.
* @return true if calling code should stop drawing.
*/
bool Editor::AbandonPaint() noexcept {
if ((paintState == painting) && !paintingAllText) {
paintState = paintAbandoned;
}
return paintState == paintAbandoned;
}
void Editor::RedrawRect(PRectangle rc) noexcept {
//Platform::DebugPrintf("Redraw %0d,%0d - %0d,%0d\n", rc.left, rc.top, rc.right, rc.bottom);
// Clip the redraw rectangle into the client area
const PRectangle rcClient = GetClientRectangle();
if (rc.top < rcClient.top)
rc.top = rcClient.top;
if (rc.bottom > rcClient.bottom)
rc.bottom = rcClient.bottom;
if (rc.left < rcClient.left)
rc.left = rcClient.left;
if (rc.right > rcClient.right)
rc.right = rcClient.right;
if ((rc.bottom > rc.top) && (rc.right > rc.left)) {
wMain.InvalidateRectangle(rc);
}
}
void Editor::DiscardOverdraw() noexcept {
// Overridden on platforms that may draw outside visible area.
}
void Editor::Redraw() noexcept {
//Platform::DebugPrintf("Redraw all\n");
const PRectangle rcClient = GetClientRectangle();
wMain.InvalidateRectangle(rcClient);
if (wMargin.GetID())
wMargin.InvalidateAll();
//wMain.InvalidateAll();
}
void Editor::RedrawSelMargin(Sci::Line line, bool allAfter) noexcept {
const bool markersInText = vs.maskInLine || vs.maskDrawInText;
if (!wMargin.GetID() || markersInText) { // May affect text area so may need to abandon and retry
if (AbandonPaint()) {
return;
}
}
if (wMargin.GetID() && markersInText) {
Redraw();
return;
}
PRectangle rcMarkers = GetClientRectangle();
if (!markersInText) {
// Normal case: just draw the margin
rcMarkers.right = rcMarkers.left + vs.fixedColumnWidth;
}
if (line != -1) {
PRectangle rcLine = RectangleFromRange(Range(pdoc->LineStart(line)), 0);
// Inflate line rectangle if there are image markers with height larger than line height
if (vs.largestMarkerHeight > vs.lineHeight) {
const int delta = (vs.largestMarkerHeight - vs.lineHeight + 1) / 2;
rcLine.top -= delta;
rcLine.bottom += delta;
if (rcLine.top < rcMarkers.top)
rcLine.top = rcMarkers.top;
if (rcLine.bottom > rcMarkers.bottom)
rcLine.bottom = rcMarkers.bottom;
}
rcMarkers.top = rcLine.top;
if (!allAfter)
rcMarkers.bottom = rcLine.bottom;
if (rcMarkers.Empty())
return;
}
if (wMargin.GetID()) {
const Point ptOrigin = GetVisibleOriginInMain();
rcMarkers.Move(-ptOrigin.x, -ptOrigin.y);
wMargin.InvalidateRectangle(rcMarkers);
} else {
wMain.InvalidateRectangle(rcMarkers);
}
}
PRectangle Editor::RectangleFromRange(Range r, int overlap) const noexcept {
const Sci::Line minLine = pcs->DisplayFromDoc(
pdoc->SciLineFromPosition(r.First()));
const Sci::Line maxLine = pcs->DisplayLastFromDoc(
pdoc->SciLineFromPosition(r.Last()));
const PRectangle rcClientDrawing = GetClientDrawingRectangle();
PRectangle rc;
const int leftTextOverlap = ((xOffset == 0) && (vs.leftMarginWidth > 0)) ? 1 : 0;
rc.left = static_cast<XYPOSITION>(vs.textStart - leftTextOverlap);
rc.top = static_cast<XYPOSITION>((minLine - TopLineOfMain()) * vs.lineHeight - overlap);
if (rc.top < rcClientDrawing.top)
rc.top = rcClientDrawing.top;
// Extend to right of prepared area if any to prevent artifacts from caret line highlight
rc.right = rcClientDrawing.right;
rc.bottom = static_cast<XYPOSITION>((maxLine - TopLineOfMain() + 1) * vs.lineHeight + overlap);
return rc;
}
void Editor::InvalidateRange(Sci::Position start, Sci::Position end) noexcept {
RedrawRect(RectangleFromRange(Range(start, end), view.LinesOverlap() ? vs.lineOverlap : 0));
}
Sci::Position Editor::CurrentPosition() const {
return sel.MainCaret();
}
bool Editor::SelectionEmpty() const noexcept {
return sel.Empty();
}
SelectionPosition Editor::SelectionStart() {
return sel.RangeMain().Start();
}
SelectionPosition Editor::SelectionEnd() {
return sel.RangeMain().End();
}
void Editor::SetRectangularRange() {
if (sel.IsRectangular()) {
const int xAnchor = XFromPosition(sel.Rectangular().anchor);
int xCaret = XFromPosition(sel.Rectangular().caret);
if (sel.selType == Selection::selThin) {
xCaret = xAnchor;
}
const Sci::Line lineAnchorRect =
pdoc->SciLineFromPosition(sel.Rectangular().anchor.Position());
const Sci::Line lineCaret =
pdoc->SciLineFromPosition(sel.Rectangular().caret.Position());
const int increment = (lineCaret > lineAnchorRect) ? 1 : -1;
for (Sci::Line line = lineAnchorRect; line != lineCaret + increment; line += increment) {
SelectionRange range(SPositionFromLineX(line, xCaret), SPositionFromLineX(line, xAnchor));
if ((virtualSpaceOptions & SCVS_RECTANGULARSELECTION) == 0)
range.ClearVirtualSpace();
if (line == lineAnchorRect)
sel.SetSelection(range);
else
sel.AddSelectionWithoutTrim(range);
}
}
}
void Editor::ThinRectangularRange() {
if (sel.IsRectangular()) {
sel.selType = Selection::selThin;
if (sel.Rectangular().caret < sel.Rectangular().anchor) {
sel.Rectangular() = SelectionRange(sel.Range(sel.Count() - 1).caret, sel.Range(0).anchor);
} else {
sel.Rectangular() = SelectionRange(sel.Range(sel.Count() - 1).anchor, sel.Range(0).caret);
}
SetRectangularRange();
}
}
void Editor::InvalidateSelection(SelectionRange newMain, bool invalidateWholeSelection) {
if (sel.Count() > 1 || !(sel.RangeMain().anchor == newMain.anchor) || sel.IsRectangular()) {
invalidateWholeSelection = true;
}
Sci::Position firstAffected = std::min(sel.RangeMain().Start().Position(), newMain.Start().Position());
// +1 for lastAffected ensures caret repainted
Sci::Position lastAffected = std::max(newMain.caret.Position() + 1, newMain.anchor.Position());
lastAffected = std::max(lastAffected, sel.RangeMain().End().Position());
if (invalidateWholeSelection) {
for (size_t r = 0; r < sel.Count(); r++) {
firstAffected = std::min(firstAffected, sel.Range(r).caret.Position());
firstAffected = std::min(firstAffected, sel.Range(r).anchor.Position());
lastAffected = std::max(lastAffected, sel.Range(r).caret.Position() + 1);
lastAffected = std::max(lastAffected, sel.Range(r).anchor.Position());
}
}
ContainerNeedsUpdate(SC_UPDATE_SELECTION);
InvalidateRange(firstAffected, lastAffected);
}
void Editor::InvalidateWholeSelection() {
InvalidateSelection(sel.RangeMain(), true);
}
/* For Line selection - the anchor and caret are always
at the beginning and end of the region lines. */
SelectionRange Editor::LineSelectionRange(SelectionPosition currentPos_, SelectionPosition anchor_) const noexcept {
if (currentPos_ > anchor_) {
anchor_ = SelectionPosition(
pdoc->LineStart(pdoc->LineFromPosition(anchor_.Position())));
currentPos_ = SelectionPosition(
pdoc->LineEnd(pdoc->LineFromPosition(currentPos_.Position())));
} else {
currentPos_ = SelectionPosition(
pdoc->LineStart(pdoc->LineFromPosition(currentPos_.Position())));
anchor_ = SelectionPosition(
pdoc->LineEnd(pdoc->LineFromPosition(anchor_.Position())));
}
return SelectionRange(currentPos_, anchor_);
}
void Editor::SetSelection(SelectionPosition currentPos_, SelectionPosition anchor_) {
currentPos_ = ClampPositionIntoDocument(currentPos_);
anchor_ = ClampPositionIntoDocument(anchor_);
const Sci::Line currentLine = pdoc->SciLineFromPosition(currentPos_.Position());
SelectionRange rangeNew(currentPos_, anchor_);
if (sel.selType == Selection::selLines) {
rangeNew = LineSelectionRange(currentPos_, anchor_);
}
if (sel.Count() > 1 || !(sel.RangeMain() == rangeNew)) {
InvalidateSelection(rangeNew);
}
sel.RangeMain() = rangeNew;
SetRectangularRange();
ClaimSelection();
SetHoverIndicatorPosition(sel.MainCaret());
if (marginView.highlightDelimiter.NeedsDrawing(currentLine)) {
RedrawSelMargin();
}
QueueIdleWork(WorkNeeded::workUpdateUI);
}
void Editor::SetSelection(Sci::Position currentPos_, Sci::Position anchor_) {
SetSelection(SelectionPosition(currentPos_), SelectionPosition(anchor_));
}
// Just move the caret on the main selection
void Editor::SetSelection(SelectionPosition currentPos_) {
currentPos_ = ClampPositionIntoDocument(currentPos_);
const Sci::Line currentLine = pdoc->SciLineFromPosition(currentPos_.Position());
if (sel.Count() > 1 || !(sel.RangeMain().caret == currentPos_)) {
InvalidateSelection(SelectionRange(currentPos_));
}
if (sel.IsRectangular()) {
sel.Rectangular() =
SelectionRange(SelectionPosition(currentPos_), sel.Rectangular().anchor);
SetRectangularRange();
} else if (sel.selType == Selection::selLines) {
sel.RangeMain() = LineSelectionRange(currentPos_, sel.RangeMain().anchor);
} else {
sel.RangeMain() =
SelectionRange(SelectionPosition(currentPos_), sel.RangeMain().anchor);
}
ClaimSelection();
SetHoverIndicatorPosition(sel.MainCaret());
if (marginView.highlightDelimiter.NeedsDrawing(currentLine)) {
RedrawSelMargin();
}
QueueIdleWork(WorkNeeded::workUpdateUI);
}
void Editor::SetSelection(int currentPos_) {
SetSelection(SelectionPosition(currentPos_));
}
void Editor::SetEmptySelection(SelectionPosition currentPos_) {
const Sci::Line currentLine = pdoc->SciLineFromPosition(currentPos_.Position());
SelectionRange rangeNew(ClampPositionIntoDocument(currentPos_));
if (sel.Count() > 1 || !(sel.RangeMain() == rangeNew)) {
InvalidateSelection(rangeNew);
}
sel.Clear();
sel.RangeMain() = rangeNew;
SetRectangularRange();
ClaimSelection();
SetHoverIndicatorPosition(sel.MainCaret());
if (marginView.highlightDelimiter.NeedsDrawing(currentLine)) {
RedrawSelMargin();
}
QueueIdleWork(WorkNeeded::workUpdateUI);
}
void Editor::SetEmptySelection(Sci::Position currentPos_) {
SetEmptySelection(SelectionPosition(currentPos_));
}
void Editor::MultipleSelectAdd(AddNumber addNumber) {
if (SelectionEmpty() || !multipleSelection) {
// Select word at caret
const Sci::Position startWord = pdoc->ExtendWordSelect(sel.MainCaret(), -1, true);
const Sci::Position endWord = pdoc->ExtendWordSelect(startWord, 1, true);
TrimAndSetSelection(endWord, startWord);
} else {
if (!pdoc->HasCaseFolder())
pdoc->SetCaseFolder(CaseFolderForEncoding());
const Range rangeMainSelection(sel.RangeMain().Start().Position(), sel.RangeMain().End().Position());
const std::string selectedText = RangeText(rangeMainSelection.start, rangeMainSelection.end);
const Range rangeTarget(targetStart, targetEnd);
std::vector<Range> searchRanges;
// Search should be over the target range excluding the current selection so
// may need to search 2 ranges, after the selection then before the selection.
if (rangeTarget.Overlaps(rangeMainSelection)) {
// Common case is that the selection is completely within the target but
// may also have overlap at start or end.
if (rangeMainSelection.end < rangeTarget.end)
searchRanges.emplace_back(rangeMainSelection.end, rangeTarget.end);
if (rangeTarget.start < rangeMainSelection.start)
searchRanges.emplace_back(rangeTarget.start, rangeMainSelection.start);
} else {
// No overlap
searchRanges.push_back(rangeTarget);
}
for (const auto & searchRange : searchRanges) {
Sci::Position searchStart = searchRange.start;
const Sci::Position searchEnd = searchRange.end;
for (;;) {
Sci::Position lengthFound = selectedText.length();
const Sci::Position pos = pdoc->FindText(searchStart, searchEnd,
selectedText.c_str(), searchFlags, &lengthFound);
if (pos >= 0) {
sel.AddSelection(SelectionRange(pos + lengthFound, pos));
ContainerNeedsUpdate(SC_UPDATE_SELECTION);
ScrollRange(sel.RangeMain());
Redraw();
if (addNumber == addOne)
return;
searchStart = pos + lengthFound;
} else {
break;
}
}
}
}
}
bool Editor::RangeContainsProtected(Sci::Position start, Sci::Position end) const {
if (vs.ProtectionActive()) {
if (start > end) {
const Sci::Position t = start;
start = end;
end = t;
}
for (Sci::Position pos = start; pos < end; pos++) {
if (vs.styles[pdoc->StyleIndexAt(pos)].IsProtected())
return true;
}
}
return false;
}
bool Editor::SelectionContainsProtected() {
for (size_t r = 0; r < sel.Count(); r++) {
if (RangeContainsProtected(sel.Range(r).Start().Position(),
sel.Range(r).End().Position())) {
return true;
}
}
return false;
}
/**
* Asks document to find a good position and then moves out of any invisible positions.
*/
Sci::Position Editor::MovePositionOutsideChar(Sci::Position pos, Sci::Position moveDir, bool checkLineEnd) const {
return MovePositionOutsideChar(SelectionPosition(pos), moveDir, checkLineEnd).Position();
}
SelectionPosition Editor::MovePositionOutsideChar(SelectionPosition pos, Sci::Position moveDir, bool checkLineEnd) const {
const Sci::Position posMoved = pdoc->MovePositionOutsideChar(pos.Position(), moveDir, checkLineEnd);
if (posMoved != pos.Position())
pos.SetPosition(posMoved);
if (vs.ProtectionActive()) {
if (moveDir > 0) {
if ((pos.Position() > 0) && vs.styles[pdoc->StyleIndexAt(pos.Position() - 1)].IsProtected()) {
while ((pos.Position() < pdoc->Length()) &&
(vs.styles[pdoc->StyleIndexAt(pos.Position())].IsProtected()))
pos.Add(1);
}
} else if (moveDir < 0) {
if (vs.styles[pdoc->StyleIndexAt(pos.Position())].IsProtected()) {
while ((pos.Position() > 0) &&
(vs.styles[pdoc->StyleIndexAt(pos.Position() - 1)].IsProtected()))
pos.Add(-1);
}
}
}
return pos;
}
void Editor::MovedCaret(SelectionPosition newPos, SelectionPosition previousPos, bool ensureVisible) {
const Sci::Line currentLine = pdoc->SciLineFromPosition(newPos.Position());
if (ensureVisible) {
// In case in need of wrapping to ensure DisplayFromDoc works.
if (currentLine >= wrapPending.start) {
if (WrapLines(WrapScope::wsAll)) {
Redraw();
}
}
const XYScrollPosition newXY = XYScrollToMakeVisible(
SelectionRange(posDrag.IsValid() ? posDrag : newPos), xysDefault);
if (previousPos.IsValid() && (newXY.xOffset == xOffset)) {
// simple vertical scroll then invalidate
ScrollTo(newXY.topLine);
InvalidateSelection(SelectionRange(previousPos), true);
} else {
SetXYScroll(newXY);
}
}
ShowCaretAtCurrentPosition();
NotifyCaretMove();
ClaimSelection();
SetHoverIndicatorPosition(sel.MainCaret());
QueueIdleWork(WorkNeeded::workUpdateUI);
if (marginView.highlightDelimiter.NeedsDrawing(currentLine)) {
RedrawSelMargin();
}
}
void Editor::MovePositionTo(SelectionPosition newPos, Selection::selTypes selt, bool ensureVisible) {
const SelectionPosition spCaret = ((sel.Count() == 1) && sel.Empty()) ?
sel.Last() : SelectionPosition(INVALID_POSITION);
const Sci::Position delta = newPos.Position() - sel.MainCaret();
newPos = ClampPositionIntoDocument(newPos);
newPos = MovePositionOutsideChar(newPos, delta);
if (!multipleSelection && sel.IsRectangular() && (selt == Selection::selStream)) {
// Can't turn into multiple selection so clear additional selections
InvalidateSelection(SelectionRange(newPos), true);
sel.DropAdditionalRanges();
}
if (!sel.IsRectangular() && (selt == Selection::selRectangle)) {
// Switching to rectangular
InvalidateSelection(sel.RangeMain(), false);
SelectionRange rangeMain = sel.RangeMain();
sel.Clear();
sel.Rectangular() = rangeMain;
}
if (selt != Selection::noSel) {
sel.selType = selt;
}
if (selt != Selection::noSel || sel.MoveExtends()) {
SetSelection(newPos);
} else {
SetEmptySelection(newPos);
}
MovedCaret(newPos, spCaret, ensureVisible);
}
void Editor::MovePositionTo(Sci::Position newPos, Selection::selTypes selt, bool ensureVisible) {
MovePositionTo(SelectionPosition(newPos), selt, ensureVisible);
}
SelectionPosition Editor::MovePositionSoVisible(SelectionPosition pos, int moveDir) {
pos = ClampPositionIntoDocument(pos);
pos = MovePositionOutsideChar(pos, moveDir);
const Sci::Line lineDoc = pdoc->SciLineFromPosition(pos.Position());
if (pcs->GetVisible(lineDoc)) {
return pos;
} else {
Sci::Line lineDisplay = pcs->DisplayFromDoc(lineDoc);
if (moveDir > 0) {
// lineDisplay is already line before fold as lines in fold use display line of line after fold
lineDisplay = std::clamp<Sci::Line>(lineDisplay, 0, pcs->LinesDisplayed());
return SelectionPosition(
pdoc->LineStart(pcs->DocFromDisplay(lineDisplay)));
} else {
lineDisplay = std::clamp<Sci::Line>(lineDisplay - 1, 0, pcs->LinesDisplayed());
return SelectionPosition(
pdoc->LineEnd(pcs->DocFromDisplay(lineDisplay)));
}
}
}
SelectionPosition Editor::MovePositionSoVisible(Sci::Position pos, int moveDir) {
return MovePositionSoVisible(SelectionPosition(pos), moveDir);
}
Point Editor::PointMainCaret() {
return LocationFromPosition(sel.Range(sel.Main()).caret);
}
/**
* Choose the x position that the caret will try to stick to
* as it moves up and down.
*/
void Editor::SetLastXChosen() {
const Point pt = PointMainCaret();
lastXChosen = static_cast<int>(pt.x) + xOffset;
}
void Editor::ScrollTo(Sci::Line line, bool moveThumb) {
const Sci::Line topLineNew = std::clamp<Sci::Line>(line, 0, MaxScrollPos());
if (topLineNew != topLine) {
// Try to optimise small scrolls
#ifndef UNDER_CE
const Sci::Line linesToMove = topLine - topLineNew;
const bool performBlit = (std::abs(linesToMove) <= 10) && (paintState == notPainting);
willRedrawAll = !performBlit;
#endif
SetTopLine(topLineNew);
// Optimize by styling the view as this will invalidate any needed area
// which could abort the initial paint if discovered later.
StyleAreaBounded(GetClientRectangle(), true);
#ifndef UNDER_CE
// Perform redraw rather than scroll if many lines would be redrawn anyway.
if (performBlit) {
ScrollText(linesToMove);
} else {
Redraw();
}
willRedrawAll = false;
#else
Redraw();
#endif
if (moveThumb) {
SetVerticalScrollPos();
}
}
}
void Editor::ScrollText(Sci::Line /* linesToMove */) {
//Platform::DebugPrintf("Editor::ScrollText %d\n", linesToMove);
Redraw();
}
void Editor::HorizontalScrollTo(int xPos) {
//Platform::DebugPrintf("HorizontalScroll %d\n", xPos);
if (xPos < 0)
xPos = 0;
if (!Wrapping() && (xOffset != xPos)) {
xOffset = xPos;
ContainerNeedsUpdate(SC_UPDATE_H_SCROLL);
SetHorizontalScrollPos();
RedrawRect(GetClientRectangle());
}
}
void Editor::VerticalCentreCaret() {
const Sci::Line lineDoc =
pdoc->SciLineFromPosition(sel.IsRectangular() ? sel.Rectangular().caret.Position() : sel.MainCaret());
const Sci::Line lineDisplay = pcs->DisplayFromDoc(lineDoc);
const Sci::Line newTop = lineDisplay - (LinesOnScreen() / 2);
if (topLine != newTop) {