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-rw-r--r--src/Editor.cxx85
1 files changed, 49 insertions, 36 deletions
diff --git a/src/Editor.cxx b/src/Editor.cxx
index 2b759c96c..0096da7a2 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -1,5 +1,7 @@
// Scintilla source code edit control
-// Editor.cxx - main code for the edit control
+/** @file Editor.cxx
+ ** Main code for the edit control.
+ **/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
@@ -778,6 +780,11 @@ void DrawTabArrow(Surface *surface, PRectangle rcTab, int ymid) {
surface->LineTo(xhead, ymid + ydiff);
}
+/**
+ * Fill in the LineLayout data for the given line.
+ * Copy the given @a line and its styles from the document into local arrays.
+ * Also determine the x position at which each character starts.
+ */
void Editor::LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayout &ll) {
int numCharsInLine = 0;
int posLineStart = pdoc->LineStart(line);
@@ -786,9 +793,11 @@ void Editor::LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayou
char styleByte = 0;
int styleMask = pdoc->stylingBitsMask;
ll.xHighlightGuide = 0;
+ // If the line is very long, limit the treatment to a length that should fit in the viewport
if (posLineEnd > (posLineStart + LineLayout::maxLineLength)) {
posLineEnd = posLineStart + LineLayout::maxLineLength;
}
+ // Fill base line layout
for (int charInDoc = posLineStart; charInDoc < posLineEnd; charInDoc++) {
char chDoc = pdoc->CharAt(charInDoc);
styleByte = pdoc->StyleAt(charInDoc);
@@ -806,8 +815,8 @@ void Editor::LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayou
// Layout the line, determining the position of each character,
// with an extra element at the end for the end of the line.
- int startseg = 0;
- int startsegx = 0;
+ int startseg = 0; // Start of the current segment, in char. number
+ int startsegx = 0; // Start of the current segment, in pixels
ll.positions[0] = 0;
unsigned int tabWidth = vstyle.spaceWidth * pdoc->tabInChars;
bool lastSegItalics = false;
@@ -827,7 +836,7 @@ void Editor::LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayou
ll.positions[charInLine + 1] = surface->WidthText(ctrlCharsFont, ctrlChar, strlen(ctrlChar)) + 3;
}
lastSegItalics = false;
- } else {
+ } else { // Regular character
lastSegItalics = vstyle.styles[ll.styles[charInLine]].italic;
int lenSeg = charInLine - startseg + 1;
if ((lenSeg == 1) && (' ' == ll.chars[startseg])) {
@@ -835,7 +844,7 @@ void Editor::LayoutLine(int line, Surface *surface, ViewStyle &vstyle, LineLayou
ll.positions[charInLine + 1] = vstyle.styles[ll.styles[charInLine]].spaceWidth;
} else {
surface->MeasureWidths(vstyle.styles[ll.styles[charInLine]].font, ll.chars + startseg,
- charInLine - startseg + 1, ll.positions + startseg + 1);
+ lenSeg, ll.positions + startseg + 1);
}
}
} else { // invisible
@@ -1140,7 +1149,7 @@ void Editor::Paint(Surface *surfaceWindow, PRectangle rcArea) {
int screenLinePaintFirst = rcArea.top / vs.lineHeight;
// The area to be painted plus one extra line is styled.
- // The extra line is to determine when a style change, such as statrting a comment flows on to other lines.
+ // The extra line is to determine when a style change, such as starting a comment flows on to other lines.
int lineStyleLast = topLine + (rcArea.bottom - 1) / vs.lineHeight + 1;
//Platform::DebugPrintf("Paint lines = %d .. %d\n", topLine + screenLinePaintFirst, lineStyleLast);
int endPosPaint = pdoc->Length();
@@ -1177,6 +1186,7 @@ void Editor::Paint(Surface *surfaceWindow, PRectangle rcArea) {
}
//Platform::DebugPrintf("start display %d, offset = %d\n", pdoc->Length(), xOffset);
+ // Do the painting
if (rcArea.right > vs.fixedColumnWidth) {
Surface *surface = surfaceWindow;
@@ -1199,11 +1209,27 @@ void Editor::Paint(Surface *surfaceWindow, PRectangle rcArea) {
rcTextArea.left = vs.fixedColumnWidth;
rcTextArea.right -= vs.rightMarginWidth;
surfaceWindow->SetClip(rcTextArea);
+
+ // Loop on visible lines
//GTimer *tim=g_timer_new();
while (visibleLine < cs.LinesDisplayed() && yposScreen < rcArea.bottom) {
//g_timer_start(tim);
//Platform::DebugPrintf("Painting line %d\n", line);
+ // Copy this line and its styles from the document into local arrays
+ // and determine the x position at which each character starts.
+ LineLayout ll;
+ LayoutLine(line, surface, vs, ll);
+
+ ll.selStart = SelectionStart(line);
+ ll.selEnd = SelectionEnd(line);
+ if (hideSelection) {
+ ll.selStart = -1;
+ ll.selEnd = -1;
+ }
+ // Need to fix this up so takes account of Unicode and DBCS
+ ll.edgeColumn = theEdge;
+
int posLineStart = pdoc->LineStart(line);
int posLineEnd = pdoc->LineStart(line + 1);
//Platform::DebugPrintf("line %d %d - %d\n", line, posLineStart, posLineEnd);
@@ -1212,11 +1238,6 @@ void Editor::Paint(Surface *surfaceWindow, PRectangle rcArea) {
rcLine.top = ypos;
rcLine.bottom = ypos + vs.lineHeight;
- // Copy this line and its styles from the document into local arrays
- // and determine the x position at which each character starts.
- LineLayout ll;
- LayoutLine(line, surface, vs, ll);
-
// Highlight the current braces if any
if ((braces[0] >= posLineStart) && (braces[0] < posLineEnd)) {
int braceOffset = braces[0] - posLineStart;
@@ -1233,15 +1254,6 @@ void Editor::Paint(Surface *surfaceWindow, PRectangle rcArea) {
ll.xHighlightGuide = highlightGuideColumn * vs.spaceWidth;
}
- ll.selStart = SelectionStart(line);
- ll.selEnd = SelectionEnd(line);
- if (hideSelection) {
- ll.selStart = -1;
- ll.selEnd = -1;
- }
- // Need to fix this up so takes account of Unicode and DBCS
- ll.edgeColumn = theEdge;
-
// Draw the line
if (cs.GetVisible(line))
DrawLine(surface, vs, line, visibleLine, xStart, rcLine, ll);
@@ -1320,6 +1332,7 @@ void Editor::Paint(Surface *surfaceWindow, PRectangle rcArea) {
}
//g_timer_destroy(tim);
+ // Right column limit indicator
PRectangle rcBeyondEOF = rcClient;
rcBeyondEOF.left = vs.fixedColumnWidth;
rcBeyondEOF.right = rcBeyondEOF.right;
@@ -1444,6 +1457,21 @@ long Editor::FormatRange(bool draw, RangeToFormat *pfr) {
while (line <= linePrintLast && ypos < pfr->rc.bottom) {
+ // When printing, the hdc and hdcTarget may be the same, so
+ // changing the state of surfaceMeasure may change the underlying
+ // state of surface. Therefore, any cached state is discarded before
+ // using each surface.
+ surfaceMeasure->FlushCachedState();
+
+ // Copy this line and its styles from the document into local arrays
+ // and determine the x position at which each character starts.
+ LineLayout ll;
+ LayoutLine(line, surfaceMeasure, vsPrint, ll);
+ ll.selStart = -1;
+ ll.selEnd = -1;
+ // Need to fix this up so takes account of Unicode and DBCS
+ ll.edgeColumn = theEdge;
+
PRectangle rcLine;
rcLine.left = pfr->rc.left + lineNumberWidth;
rcLine.top = ypos;
@@ -1464,21 +1492,6 @@ long Editor::FormatRange(bool draw, RangeToFormat *pfr) {
vsPrint.styles[STYLE_LINENUMBER].back.allocated);
}
- // When printing, the hdc and hdcTarget may be the same, so
- // changing the state of surfaceMeasure may change the underlying
- // state of surface. Therefore, any cached state is discarded before
- // using each surface.
-
- // Copy this line and its styles from the document into local arrays
- // and determine the x position at which each character starts.
- surfaceMeasure->FlushCachedState();
- LineLayout ll;
- LayoutLine(line, surfaceMeasure, vsPrint, ll);
- ll.selStart = -1;
- ll.selEnd = -1;
- // Need to fix this up so takes account of Unicode and DBCS
- ll.edgeColumn = theEdge;
-
// Draw the line
surface->FlushCachedState();
DrawLine(surface, vsPrint, line, line, xStart, rcLine, ll);
@@ -3269,7 +3282,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
SetLastXChosen();
break;
- // Edit control mesages
+ // Edit control messages
// Not supported (no-ops):
// EM_GETWORDBREAKPROC
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-11 20:18:42 +0000