Fleshed out more TextEditor functionality.
TextDocumentView now always has a TextEditor, but editing can be disabled. The selection code lives only in TextEditor. Implemented more cursor navigation code.
This commit is contained in:
Stephan Aßmus
parent
00d04bc7f2
commit
1bce247b22
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@ -24,14 +24,14 @@ TextDocumentView::TextDocumentView(const char* name)
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fInsetRight(0.0f),
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fInsetBottom(0.0f),
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fSelectionAnchorOffset(0),
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fCaretOffset(0),
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fCaretAnchorX(0.0f),
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fCaretBounds(),
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fShowCaret(false),
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fMouseDown(false)
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{
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fTextDocumentLayout.SetWidth(_TextLayoutWidth(Bounds().Width()));
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// Set default TextEditor
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SetTextEditor(TextEditorRef(new(std::nothrow) TextEditor(), true));
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SetViewColor(B_TRANSPARENT_COLOR);
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SetLowColor(255, 255, 255, 255);
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@ -67,11 +67,14 @@ TextDocumentView::Draw(BRect updateRect)
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fTextDocumentLayout.SetWidth(_TextLayoutWidth(Bounds().Width()));
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fTextDocumentLayout.Draw(this, BPoint(fInsetLeft, fInsetTop), updateRect);
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bool isCaret = fSelectionAnchorOffset == fCaretOffset;
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if (fTextEditor.Get() == NULL)
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return;
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bool isCaret = fTextEditor->SelectionLength() == 0;
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if (isCaret) {
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if (fShowCaret && fTextEditor.Get() != NULL)
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_DrawCaret(fCaretOffset);
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if (fShowCaret && fTextEditor->IsEditingEnabled())
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_DrawCaret(fTextEditor->CaretOffset());
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} else {
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_DrawSelection();
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}
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@ -174,11 +177,13 @@ TextDocumentView::KeyDown(const char* bytes, int32 numBytes)
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if (Window() != NULL && Window()->CurrentMessage() != NULL) {
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BMessage* message = Window()->CurrentMessage();
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message->FindInt32("key", &event.key);
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message->FindInt32("raw_char", &event.key);
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message->FindInt32("modifiers", &event.modifiers);
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}
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fTextEditor->KeyDown(event);
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fShowCaret = true;
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Invalidate();
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}
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@ -245,16 +250,20 @@ TextDocumentView::SetTextDocument(const TextDocumentRef& document)
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if (fTextEditor.Get() != NULL)
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fTextEditor->SetDocument(document);
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fSelectionAnchorOffset = 0;
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fCaretOffset = 0;
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fCaretAnchorX = 0.0f;
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InvalidateLayout();
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Invalidate();
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_UpdateScrollBars();
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}
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void
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TextDocumentView::SetEditingEnabled(bool enabled)
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{
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if (fTextEditor.Get() != NULL)
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fTextEditor->SetEditingEnabled(enabled);
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}
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void
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TextDocumentView::SetTextEditor(const TextEditorRef& editor)
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{
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@ -262,6 +271,8 @@ TextDocumentView::SetTextEditor(const TextEditorRef& editor)
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return;
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if (fTextEditor.Get() != NULL) {
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fTextEditor->SetDocument(TextDocumentRef());
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fTextEditor->SetLayout(TextDocumentLayoutRef());
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// TODO: Probably has to remove listeners
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}
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@ -269,6 +280,8 @@ TextDocumentView::SetTextEditor(const TextEditorRef& editor)
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if (fTextEditor.Get() != NULL) {
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fTextEditor->SetDocument(fTextDocument);
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fTextEditor->SetLayout(TextDocumentLayoutRef(
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&fTextDocumentLayout));
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// TODO: Probably has to add listeners
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}
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}
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@ -307,38 +320,33 @@ TextDocumentView::SetInsets(float left, float top, float right, float bottom)
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void
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TextDocumentView::SetCaret(const BPoint& location, bool extendSelection)
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TextDocumentView::SetCaret(BPoint location, bool extendSelection)
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{
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if (fTextDocument.Get() == NULL)
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if (fTextEditor.Get() == NULL)
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return;
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bool rightOfChar = false;
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int32 caretOffset = fTextDocumentLayout.TextOffsetAt(
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location.x - fInsetLeft, location.y - fInsetTop, rightOfChar);
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location.x -= fInsetLeft;
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location.y -= fInsetTop;
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if (rightOfChar)
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caretOffset++;
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_SetCaretOffset(caretOffset, true, extendSelection);
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fTextEditor->SetCaret(location, extendSelection);
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fShowCaret = !extendSelection;
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Invalidate();
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}
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bool
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TextDocumentView::HasSelection() const
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{
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return fSelectionAnchorOffset != fCaretOffset;
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return fTextEditor.Get() != NULL && fTextEditor->HasSelection();
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}
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void
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TextDocumentView::GetSelection(int32& start, int32& end) const
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{
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if (fSelectionAnchorOffset <= fCaretOffset) {
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start = fSelectionAnchorOffset;
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end = fCaretOffset;
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} else {
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start = fCaretOffset;
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end = fSelectionAnchorOffset;
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if (fTextEditor.Get()) {
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start = fTextEditor->SelectionStart();
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end = fTextEditor->SelectionEnd();
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}
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}
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@ -346,8 +354,7 @@ TextDocumentView::GetSelection(int32& start, int32& end) const
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void
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TextDocumentView::Copy(BClipboard* clipboard)
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{
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if (fSelectionAnchorOffset == fCaretOffset
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|| fTextDocument.Get() == NULL) {
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if (!HasSelection() || fTextDocument.Get() == NULL) {
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// Nothing to copy, don't clear clipboard contents for now reason.
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return;
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}
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@ -425,41 +432,6 @@ TextDocumentView::_UpdateScrollBars()
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}
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void
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TextDocumentView::_SetCaretOffset(int32 offset, bool updateAnchor,
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bool lockSelectionAnchor)
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{
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if (offset < 0)
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offset = 0;
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int32 length = fTextDocument->Length();
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if (offset > length)
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offset = length;
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if (offset == fCaretOffset && (lockSelectionAnchor
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|| offset == fSelectionAnchorOffset)) {
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return;
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}
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if (!lockSelectionAnchor)
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fSelectionAnchorOffset = offset;
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fCaretOffset = offset;
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fShowCaret = true;
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if (updateAnchor) {
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float x1;
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float y1;
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float x2;
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float y2;
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fTextDocumentLayout.GetTextBounds(fCaretOffset, x1, y1, x2, y2);
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fCaretAnchorX = x1;
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}
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Invalidate();
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}
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void
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TextDocumentView::_DrawCaret(int32 textOffset)
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{
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@ -52,6 +52,7 @@ public:
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void SetTextDocument(
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const TextDocumentRef& document);
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void SetEditingEnabled(bool enabled);
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void SetTextEditor(
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const TextEditorRef& editor);
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@ -60,8 +61,7 @@ public:
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void SetInsets(float left, float top, float right,
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float bottom);
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void SetCaret(const BPoint& where,
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bool extendSelection);
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void SetCaret(BPoint where, bool extendSelection);
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bool HasSelection() const;
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void GetSelection(int32& start, int32& end) const;
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@ -73,9 +73,6 @@ private:
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void _UpdateScrollBars();
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void _SetCaretOffset(int32 offset, bool updateAnchor,
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bool lockSelectionAnchor);
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void _DrawCaret(int32 textOffset);
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void _DrawSelection();
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void _GetSelectionShape(BShape& shape,
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@ -91,12 +88,8 @@ private:
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float fInsetRight;
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float fInsetBottom;
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int32 fSelectionAnchorOffset;
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int32 fCaretOffset;
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float fCaretAnchorX;
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bool fShowCaret;
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BRect fCaretBounds;
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bool fShowCaret;
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bool fMouseDown;
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};
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@ -14,7 +14,8 @@ TextEditor::TextEditor()
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fLayout(),
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fSelection(),
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fCaretAnchorX(0.0f),
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fStyleAtCaret()
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fStyleAtCaret(),
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fEditingEnabled(true)
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{
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}
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@ -25,7 +26,13 @@ TextEditor::TextEditor(const TextEditor& other)
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fLayout(other.fLayout),
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fSelection(other.fSelection),
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fCaretAnchorX(other.fCaretAnchorX),
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fStyleAtCaret(other.fStyleAtCaret)
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fStyleAtCaret(other.fStyleAtCaret),
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fEditingEnabled(other.fEditingEnabled)
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{
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}
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TextEditor::~TextEditor()
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{
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}
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@ -41,6 +48,7 @@ TextEditor::operator=(const TextEditor& other)
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fSelection = other.fSelection;
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fCaretAnchorX = other.fCaretAnchorX;
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fStyleAtCaret = other.fStyleAtCaret;
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fEditingEnabled = other.fEditingEnabled;
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return *this;
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}
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@ -55,7 +63,8 @@ TextEditor::operator==(const TextEditor& other) const
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&& fLayout == other.fLayout
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&& fSelection == other.fSelection
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&& fCaretAnchorX == other.fCaretAnchorX
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&& fStyleAtCaret == other.fStyleAtCaret;
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&& fStyleAtCaret == other.fStyleAtCaret
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&& fEditingEnabled == other.fEditingEnabled;
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}
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@ -85,6 +94,30 @@ TextEditor::SetLayout(const TextDocumentLayoutRef& ref)
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}
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void
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TextEditor::SetEditingEnabled(bool enabled)
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{
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fEditingEnabled = enabled;
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}
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void
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TextEditor::SetCaret(BPoint location, bool extendSelection)
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{
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if (fDocument.Get() == NULL || fLayout.Get() == NULL)
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return;
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bool rightOfChar = false;
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int32 caretOffset = fLayout->TextOffsetAt(location.x, location.y,
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rightOfChar);
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if (rightOfChar)
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caretOffset++;
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_SetCaretOffset(caretOffset, true, extendSelection, true);
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}
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void
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TextEditor::SetSelection(TextSelection selection)
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{
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@ -116,15 +149,15 @@ TextEditor::KeyDown(KeyEvent event)
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switch (event.key) {
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case B_UP_ARROW:
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_LineUp(select);
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LineUp(select);
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break;
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case B_DOWN_ARROW:
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_LineDown(select);
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LineDown(select);
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break;
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case B_LEFT_ARROW:
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if (_HasSelection() && !select) {
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if (HasSelection() && !select) {
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_SetCaretOffset(
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std::min(fSelection.Caret(), fSelection.Anchor()),
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true, false, true
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@ -134,7 +167,7 @@ TextEditor::KeyDown(KeyEvent event)
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break;
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case B_RIGHT_ARROW:
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if (_HasSelection() && !select) {
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if (HasSelection() && !select) {
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_SetCaretOffset(
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std::max(fSelection.Caret(), fSelection.Anchor()),
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true, false, true
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@ -144,11 +177,11 @@ TextEditor::KeyDown(KeyEvent event)
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break;
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case B_HOME:
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_LineStart(select);
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LineStart(select);
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break;
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case B_END:
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_LineEnd(select);
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LineEnd(select);
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break;
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case B_ENTER:
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@ -164,8 +197,8 @@ TextEditor::KeyDown(KeyEvent event)
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break;
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case B_BACKSPACE:
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if (_HasSelection()) {
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Remove(_SelectionStart(), _SelectionLength());
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if (HasSelection()) {
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Remove(SelectionStart(), SelectionLength());
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} else {
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if (fSelection.Caret() > 0)
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Remove(fSelection.Caret() - 1, 1);
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@ -173,8 +206,8 @@ TextEditor::KeyDown(KeyEvent event)
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break;
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case B_DELETE:
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if (_HasSelection()) {
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Remove(_SelectionStart(), _SelectionLength());
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if (HasSelection()) {
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Remove(SelectionStart(), SelectionLength());
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} else {
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if (fSelection.Caret() < fDocument->Length())
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Remove(fSelection.Caret(), 1);
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@ -207,6 +240,9 @@ TextEditor::KeyDown(KeyEvent event)
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void
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TextEditor::Insert(int32 offset, const BString& string)
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{
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if (!fEditingEnabled)
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return;
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// TODO: ...
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}
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@ -214,14 +250,119 @@ TextEditor::Insert(int32 offset, const BString& string)
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void
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TextEditor::Remove(int32 offset, int32 length)
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{
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if (!fEditingEnabled)
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return;
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// TODO: ...
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}
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// #pragma mark -
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void
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TextEditor::LineUp(bool select)
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{
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if (fLayout.Get() == NULL)
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return;
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int32 lineIndex = fLayout->LineIndexForOffset(fSelection.Caret());
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_MoveToLine(lineIndex - 1, select);
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}
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void
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TextEditor::LineDown(bool select)
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{
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if (fLayout.Get() == NULL)
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return;
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int32 lineIndex = fLayout->LineIndexForOffset(fSelection.Caret());
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_MoveToLine(lineIndex + 1, select);
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}
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void
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TextEditor::LineStart(bool select)
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{
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if (fLayout.Get() == NULL)
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return;
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int32 lineIndex = fLayout->LineIndexForOffset(fSelection.Caret());
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_SetCaretOffset(fLayout->FirstOffsetOnLine(lineIndex), true, select,
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true);
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}
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void
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TextEditor::LineEnd(bool select)
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{
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if (fLayout.Get() == NULL)
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return;
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int32 lineIndex = fLayout->LineIndexForOffset(fSelection.Caret());
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_SetCaretOffset(fLayout->LastOffsetOnLine(lineIndex), true, select,
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true);
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}
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// #pragma mark -
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bool
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TextEditor::HasSelection() const
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{
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return SelectionLength() > 0;
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}
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int32
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TextEditor::SelectionStart() const
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{
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return std::min(fSelection.Caret(), fSelection.Anchor());
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}
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int32
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TextEditor::SelectionEnd() const
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{
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return std::max(fSelection.Caret(), fSelection.Anchor());
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}
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int32
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TextEditor::SelectionLength() const
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{
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return SelectionEnd() - SelectionStart();
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}
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// #pragma mark - private
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// _SetCaretOffset
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// _MoveToLine
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void
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TextEditor::_MoveToLine(int32 lineIndex, bool select)
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{
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if (lineIndex < 0 || lineIndex >= fLayout->CountLines())
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return;
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float x1;
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float y1;
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float x2;
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float y2;
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fLayout->GetLineBounds(lineIndex , x1, y1, x2, y2);
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bool rightOfCenter;
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int32 textOffset = fLayout->TextOffsetAt(fCaretAnchorX, (y1 + y2) / 2,
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rightOfCenter);
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if (rightOfCenter)
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textOffset++;
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_SetCaretOffset(textOffset, false, select, true);
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}
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void
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TextEditor::_SetCaretOffset(int32 offset, bool updateAnchor,
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bool lockSelectionAnchor, bool updateSelectionStyle)
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@ -241,7 +382,6 @@ TextEditor::_SetCaretOffset(int32 offset, bool updateAnchor,
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}
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// _SetSelection
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void
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TextEditor::_SetSelection(int32 caret, int32 anchor, bool updateAnchor,
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bool updateSelectionStyle)
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@ -249,11 +389,11 @@ TextEditor::_SetSelection(int32 caret, int32 anchor, bool updateAnchor,
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if (fLayout.Get() == NULL)
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return;
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if (caret == fSelection.Caret() && caret == fSelection.Anchor())
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if (caret == fSelection.Caret() && anchor == fSelection.Anchor())
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return;
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fSelection.SetAnchor(anchor);
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fSelection.SetCaret(caret);
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fSelection.SetAnchor(anchor);
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if (updateAnchor) {
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float x1;
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@ -283,63 +423,3 @@ TextEditor::_UpdateStyleAtCaret()
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|||
}
|
||||
|
||||
|
||||
// #pragma mark -
|
||||
|
||||
|
||||
void
|
||||
TextEditor::_LineUp(bool select)
|
||||
{
|
||||
// TODO
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
TextEditor::_LineDown(bool select)
|
||||
{
|
||||
// TODO
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
TextEditor::_LineStart(bool select)
|
||||
{
|
||||
// TODO
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
TextEditor::_LineEnd(bool select)
|
||||
{
|
||||
// TODO
|
||||
}
|
||||
|
||||
|
||||
// #pragma mark -
|
||||
|
||||
|
||||
bool
|
||||
TextEditor::_HasSelection() const
|
||||
{
|
||||
return _SelectionLength() > 0;
|
||||
}
|
||||
|
||||
|
||||
int32
|
||||
TextEditor::_SelectionStart() const
|
||||
{
|
||||
return std::min(fSelection.Caret(), fSelection.Anchor());
|
||||
}
|
||||
|
||||
|
||||
int32
|
||||
TextEditor::_SelectionEnd() const
|
||||
{
|
||||
return std::max(fSelection.Caret(), fSelection.Anchor());
|
||||
}
|
||||
|
||||
|
||||
int32
|
||||
TextEditor::_SelectionLength() const
|
||||
{
|
||||
return _SelectionEnd() - _SelectionStart();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
#define TEXT_EDITOR_H
|
||||
|
||||
|
||||
#include <Point.h>
|
||||
#include <Referenceable.h>
|
||||
|
||||
#include "CharacterStyle.h"
|
||||
|
|
@ -27,6 +28,7 @@ class TextEditor : public BReferenceable {
|
|||
public:
|
||||
TextEditor();
|
||||
TextEditor(const TextEditor& other);
|
||||
virtual ~TextEditor();
|
||||
|
||||
TextEditor& operator=(const TextEditor& other);
|
||||
bool operator==(const TextEditor& other) const;
|
||||
|
|
@ -41,6 +43,11 @@ public:
|
|||
TextDocumentLayoutRef Layout() const
|
||||
{ return fLayout; }
|
||||
|
||||
void SetEditingEnabled(bool enabled);
|
||||
inline bool IsEditingEnabled() const
|
||||
{ return fEditingEnabled; }
|
||||
|
||||
void SetCaret(BPoint location, bool extendSelection);
|
||||
void SetSelection(TextSelection selection);
|
||||
inline TextSelection Selection() const
|
||||
{ return fSelection; }
|
||||
|
|
@ -49,12 +56,25 @@ public:
|
|||
::CharacterStyle CharacterStyle() const
|
||||
{ return fStyleAtCaret; }
|
||||
|
||||
void KeyDown(KeyEvent event);
|
||||
virtual void KeyDown(KeyEvent event);
|
||||
|
||||
void Insert(int32 offset, const BString& string);
|
||||
void Remove(int32 offset, int32 length);
|
||||
virtual void Insert(int32 offset, const BString& string);
|
||||
virtual void Remove(int32 offset, int32 length);
|
||||
|
||||
void LineUp(bool select);
|
||||
void LineDown(bool select);
|
||||
void LineStart(bool select);
|
||||
void LineEnd(bool select);
|
||||
|
||||
bool HasSelection() const;
|
||||
int32 SelectionStart() const;
|
||||
int32 SelectionEnd() const;
|
||||
int32 SelectionLength() const;
|
||||
inline int32 CaretOffset() const
|
||||
{ return fSelection.Caret(); }
|
||||
|
||||
private:
|
||||
void _MoveToLine(int32 lineIndex, bool select);
|
||||
void _SetCaretOffset(int32 offset,
|
||||
bool updateAnchor,
|
||||
bool lockSelectionAnchor,
|
||||
|
|
@ -64,23 +84,13 @@ private:
|
|||
bool updateSelectionStyle);
|
||||
|
||||
void _UpdateStyleAtCaret();
|
||||
|
||||
void _LineUp(bool select);
|
||||
void _LineDown(bool select);
|
||||
void _LineStart(bool select);
|
||||
void _LineEnd(bool select);
|
||||
|
||||
bool _HasSelection() const;
|
||||
int32 _SelectionStart() const;
|
||||
int32 _SelectionEnd() const;
|
||||
int32 _SelectionLength() const;
|
||||
|
||||
private:
|
||||
TextDocumentRef fDocument;
|
||||
TextDocumentLayoutRef fLayout;
|
||||
TextSelection fSelection;
|
||||
float fCaretAnchorX;
|
||||
::CharacterStyle fStyleAtCaret;
|
||||
bool fEditingEnabled;
|
||||
};
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue