* Removed no longer needed workaround for mouse wheel messages (thanks Axel!).

* Introduced SourceCode::LineLengthAt(index) and respective implementations in FileSourceCode and DisassembledCode for getting the cached length of the line at the given index.
* Use LineLengthAt in various places in SourceView::TextView to avoid having to calculate string lengths on the fly.
* Clamp the size of the drag and drop rect to the window size. Otherwise in cases of large selections, said rect would get quite large.
* Add support for double click word and triple click line selection.
* Fix problems with tracking state which would erroneously cause the mouse entering the view while dragging on a scroll bar to initiate a drag and drop if there was selected text.
* Add Select All menu/keyboard shortcut and implement corresponding functionality in SourceView::TextView.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31587 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/debugger/files/SourceFile.cpp

@@ -98,7 +98,7 @@ SourceFile::Init(const char* path)
 		fLineCount++;
 
 	// allocate line offset array
-	fLineOffsets = new(std::nothrow) int32[fLineCount];
+	fLineOffsets = new(std::nothrow) int32[fLineCount + 1];
 	if (fLineOffsets == NULL)
 		return B_NO_MEMORY;
 
@@ -111,6 +111,7 @@ SourceFile::Init(const char* path)
 			fLineOffsets[lineIndex++] = i + 1;
 		}
 	}
+	fLineOffsets[fLineCount] = fileSize - 1;
 
 	return B_OK;
 }
@@ -131,6 +132,13 @@ SourceFile::LineAt(int32 index) const
 }
 
 
+int32
+SourceFile::LineLengthAt(int32 index) const
+{
+	return index >= 0 && index < fLineCount
+		? fLineOffsets[index + 1] - fLineOffsets[index] - 1: 0;
+}
+
 void
 SourceFile::LastReferenceReleased()
 {

src/apps/debugger/files/SourceFile.h

@@ -30,6 +30,7 @@ public:
 
 			int32				CountLines() const;
 			const char*			LineAt(int32 index) const;
+			int32				LineLengthAt(int32 index) const;
 
 protected:
 	virtual	void				LastReferenceReleased();

src/apps/debugger/gui/team_window/SourceView.cpp

@@ -8,6 +8,7 @@
 #include <algorithm>
 #include <new>
 
+#include <ctype.h>
 #include <stdio.h>
 
 #include <Clipboard.h>
@@ -227,10 +228,22 @@ private:
 					offset = _offset;
 				}
 
+				bool operator==(const SelectionPoint& other)
+				{
+					return line == other.line && offset == other.offset;
+				}
+
 				int32 line;
 				int32 offset;
 			};
 
+			enum TrackingState
+			{
+				kNotTracking = 0,
+				kTracking = 1,
+				kDragging = 2
+			};
+
 			float				_MaxLineWidth();
 			void				_FormatLine(const char* line,
 									BString& formattedLine);
@@ -238,6 +251,8 @@ private:
 			void				_GetSelectionRegion(BRegion& region) const;
 			void				_GetSelectionText(BString& text) const;
 			void				_CopySelectionToClipboard() const;
+			void				_SelectWordAt(const SelectionPoint& point);
+			void				_SelectLineAt(const SelectionPoint& point);
 
 private:
 
@@ -246,8 +261,11 @@ private:
 			SelectionPoint		fSelectionStart;
 			SelectionPoint		fSelectionEnd;
 			SelectionPoint		fSelectionBase;
+			bigtime_t			fLastClickTime;
+			int16				fClickCount;
 			rgb_color			fTextColor;
 			bool				fSelectionMode;
+			TrackingState		fTrackState;
 };
 
 
@@ -838,7 +856,10 @@ SourceView::TextView::TextView(SourceView* sourceView, FontInfo* fontInfo)
 	fSelectionStart(-1, -1),
 	fSelectionEnd(-1, -1),
 	fSelectionBase(-1, -1),
-	fSelectionMode(false)
+	fLastClickTime(0),
+	fClickCount(0),
+	fSelectionMode(false),
+	fTrackState(kNotTracking)
 {
 	SetViewColor(ui_color(B_DOCUMENT_BACKGROUND_COLOR));
 	fTextColor = ui_color(B_DOCUMENT_TEXT_COLOR);
@@ -958,8 +979,13 @@ SourceView::TextView::MessageReceived(BMessage* message)
 			_CopySelectionToClipboard();
 			break;
 
-		case B_MOUSE_WHEEL_CHANGED:
-			fSourceView->MessageReceived(message);
+		case B_SELECT_ALL:
+			fSelectionStart.line = 0;
+			fSelectionStart.offset = 0;
+			fSelectionEnd.line = fSourceCode->CountLines() - 1;
+			fSelectionEnd.offset = fSourceCode->LineLengthAt(
+				fSelectionEnd.line);
+			Invalidate();
 			break;
 
 		default:
@@ -975,13 +1001,35 @@ SourceView::TextView::MouseDown(BPoint where)
 	if (fSourceCode != NULL) {
 		if (!IsFocus())
 			MakeFocus(true);
+		fTrackState = kTracking;
 
 		// don't reset the selection if the user clicks within the
 		// current selection range
 		BRegion region;
 		_GetSelectionRegion(region);
-		if (!region.Contains(where)) {
-			SelectionPoint point = _SelectionPointAt(where);
+		bigtime_t clickTime = system_time();
+		SelectionPoint point = _SelectionPointAt(where);
+		bigtime_t clickSpeed = 0;
+		get_click_speed(&clickSpeed);
+		if (clickTime - fLastClickTime < clickSpeed
+				&& fSelectionBase == point) {
+			if (fClickCount > 3) {
+				fClickCount = 0;
+				fLastClickTime = 0;
+			} else {
+				fClickCount++;
+				fLastClickTime = clickTime;
+			}
+		} else {
+			fClickCount = 1;
+			fLastClickTime = clickTime;
+		}
+
+		if (fClickCount == 2)
+			_SelectWordAt(point);
+		else if (fClickCount == 3) {
+			_SelectLineAt(point);
+		} else if (!region.Contains(where)) {
 			fSelectionBase = fSelectionStart = fSelectionEnd = point;
 			fSelectionMode = true;
 			Invalidate();
@@ -1023,7 +1071,7 @@ SourceView::TextView::MouseMoved(BPoint where, uint32 transit,
 		_GetSelectionRegion(region);
 		region.Include(&oldRegion);
 		Invalidate(&region);
-	} else {
+	} else if (fTrackState == kTracking) {
 		_GetSelectionRegion(region);
 		if (region.CountRects() > 0) {
 			BString text;
@@ -1035,7 +1083,18 @@ SourceView::TextView::MouseMoved(BPoint where, uint32 transit,
 			clipName << " clipping";
 			message.AddString ("be:clip_name", clipName.String());
 			message.AddInt32 ("be:actions", B_COPY_TARGET);
-			DragMessage(&message, region.Frame());
+			BRect dragRect = region.Frame();
+			BRect visibleRect = fSourceView->Bounds();
+			if (dragRect.Height() > visibleRect.Height()) {
+				dragRect.top = 0;
+				dragRect.bottom = visibleRect.Height();
+			}
+			if (dragRect.Width() > visibleRect.Width()) {
+				dragRect.left = 0;
+				dragRect.right = visibleRect.Width();
+			}
+			DragMessage(&message, dragRect);
+			fTrackState = kDragging;
 		}
 	}
 }
@@ -1045,6 +1104,7 @@ void
 SourceView::TextView::MouseUp(BPoint where)
 {
 	fSelectionMode = false;
+	fTrackState = kNotTracking;
 }
 
 
@@ -1090,7 +1150,7 @@ SourceView::TextView::_SelectionPointAt(BPoint where) const
 	int32 line = LineAtOffset(where.y);
 	int32 offset = (int32)max_c((where.x - kLeftTextMargin)
 		/ fCharacterWidth, 0);
-	int32 lineLength = strlen(fSourceCode->LineAt(line));
+	int32 lineLength = fSourceCode->LineLengthAt(line);
 	if (offset > lineLength)
 		offset = (lineLength > 0) ? lineLength - 1 : 0;
 	return SelectionPoint(line, offset);
@@ -1184,6 +1244,48 @@ SourceView::TextView::_CopySelectionToClipboard(void) const
 }
 
 
+void
+SourceView::TextView::_SelectWordAt(const SelectionPoint& point)
+{
+	const char* line = fSourceCode->LineAt(point.line);
+	if (isalpha(line[point.offset]) || isdigit(line[point.offset])) {
+		int32 length = fSourceCode->LineLengthAt(point.line);
+		int32 start = point.offset - 1;
+		int32 end = point.offset + 1;
+		while ((end) < length) {
+			if (!isalpha(line[end]) && !isdigit(line[end]))
+				break;
+			++end;
+		}
+		while ((start - 1) >= 0) {
+			if (!isalpha(line[start - 1]) && !isdigit(line[start - 1]))
+				break;
+			--start;
+		}
+
+		fSelectionStart.line = point.line;
+		fSelectionStart.offset = start;
+		fSelectionEnd.line = point.line;
+		fSelectionEnd.offset = end;
+		BRegion region;
+		_GetSelectionRegion(region);
+		Invalidate(&region);
+	}
+}
+
+
+void
+SourceView::TextView::_SelectLineAt(const SelectionPoint& point)
+{
+	fSelectionStart.line = fSelectionEnd.line = point.line;
+	fSelectionStart.offset = 0;
+	fSelectionEnd.offset = fSourceCode->LineLengthAt(point.line);
+	BRegion region;
+	_GetSelectionRegion(region);
+	Invalidate(&region);
+}
+
+
 // #pragma mark - SourceView
 
 

src/apps/debugger/gui/team_window/TeamWindow.cpp

@@ -147,6 +147,7 @@ TeamWindow::DispatchMessage(BMessage* message, BHandler* handler)
 			break;
 
 		case B_COPY:
+		case B_SELECT_ALL:
 			BView* focusView = CurrentFocus();
 			if (focusView != NULL)
 				focusView->MessageReceived(message);
@@ -413,6 +414,9 @@ TeamWindow::_Init()
 	item = new BMenuItem("Copy", new BMessage(B_COPY), 'C');
 	menu->AddItem(item);
 	item->SetTarget(this);
+	item = new BMenuItem("Select All", new BMessage(B_SELECT_ALL), 'A');
+	menu->AddItem(item);
+	item->SetTarget(this);
 
 	AutoLocker<TeamDebugModel> locker(fDebugModel);
 	_UpdateRunButtons();

src/apps/debugger/model/DisassembledCode.cpp

@@ -84,6 +84,14 @@ DisassembledCode::LineAt(int32 index) const
 }
 
 
+int32
+DisassembledCode::LineLengthAt(int32 index) const
+{
+	Line* line = fLines.ItemAt(index);
+	return line != NULL ? line->line.Length() : 0;
+}
+
+
 bool
 DisassembledCode::GetStatementLocationRange(const SourceLocation& location,
 	SourceLocation& _start, SourceLocation& _end) const

src/apps/debugger/model/DisassembledCode.h

@@ -27,6 +27,7 @@ public:
 
 	virtual	int32				CountLines() const;
 	virtual	const char*			LineAt(int32 index) const;
+	virtual	int32				LineLengthAt(int32 index) const;
 
 	virtual	bool				GetStatementLocationRange(
 									const SourceLocation& location,

src/apps/debugger/model/FileSourceCode.cpp

@@ -91,6 +91,13 @@ FileSourceCode::LineAt(int32 index) const
 }
 
 
+int32
+FileSourceCode::LineLengthAt(int32 index) const
+{
+	return fSourceFile->LineLengthAt(index);
+}
+
+
 bool
 FileSourceCode::GetStatementLocationRange(const SourceLocation& location,
 	SourceLocation& _start, SourceLocation& _end) const

src/apps/debugger/model/FileSourceCode.h

@@ -35,6 +35,7 @@ public:
 
 	virtual	int32				CountLines() const;
 	virtual	const char*			LineAt(int32 index) const;
+	virtual int32				LineLengthAt(int32 index) const;
 
 	virtual	bool				GetStatementLocationRange(
 									const SourceLocation& location,

src/apps/debugger/model/SourceCode.h

@@ -30,6 +30,7 @@ public:
 
 	virtual	int32				CountLines() const = 0;
 	virtual	const char*			LineAt(int32 index) const = 0;
+	virtual int32				LineLengthAt(int32 index) const = 0;
 
 	virtual	bool				GetStatementLocationRange(
 									const SourceLocation& location,