#include <dali-toolkit/internal/text/script-run.h>
#include <dali-toolkit/internal/text/segmentation.h>
#include <dali-toolkit/internal/text/shaper.h>
+#include <dali-toolkit/internal/text/text-io.h>
#include <dali-toolkit/internal/text/text-view.h>
#include <dali-toolkit/internal/text/visual-model-impl.h>
namespace
{
+
const float MAX_FLOAT = std::numeric_limits<float>::max();
const std::string EMPTY_STRING;
+
+enum ModifyType
+{
+ REPLACE_TEXT, ///< Replace the entire text
+ INSERT_TEXT, ///< Insert characters at the current cursor position
+ DELETE_TEXT ///< Delete a character at the current cursor position
+};
+
+struct ModifyEvent
+{
+ ModifyType type;
+ std::string text;
+};
+
} // namespace
namespace Dali
{
KEYBOARD_FOCUS_GAIN_EVENT,
KEYBOARD_FOCUS_LOST_EVENT,
- KEY_EVENT,
+ CURSOR_KEY_EVENT,
TAP_EVENT,
GRAB_HANDLE_EVENT
};
int mInt;
unsigned int mUint;
float mFloat;
- char* mString;
};
struct Event
mVisualModel( visualModel ),
mDecorator( decorator ),
mState( INACTIVE ),
+ mPrimaryCursorPosition( 0u ),
+ mSecondaryCursorPosition( 0u ),
mDecoratorUpdated( false ),
mCursorBlinkEnabled( true )
{
OnKeyboardFocus( false );
break;
}
- case KEY_EVENT:
+ case CURSOR_KEY_EVENT:
{
- OnKeyEvent( *iter );
+ OnCursorKeyEvent( *iter );
break;
}
case TAP_EVENT:
}
}
- void OnKeyEvent( const Event& event )
+ void OnCursorKeyEvent( const Event& event )
{
int keyCode = event.p1.mInt;
- // Handle state changes
- if( Dali::DALI_KEY_ESCAPE == keyCode )
+ if( Dali::DALI_KEY_CURSOR_LEFT == keyCode )
{
- ChangeState( INACTIVE ); // Escape key ends edit mode
+ // TODO
}
- else if ( event.p2.mString )
+ else if( Dali::DALI_KEY_CURSOR_RIGHT == keyCode )
{
- // Some text may be selected, hiding keyboard causes an empty keystring to be sent, we don't want to delete highlight in this case
- ChangeState( EDITING );
+ // TODO
}
-
- // Handle the actual key event
- if( Dali::DALI_KEY_BACKSPACE == keyCode )
+ else if( Dali::DALI_KEY_CURSOR_UP == keyCode )
{
- HandleBackspaceKey();
+ // TODO
}
- else if( Dali::DALI_KEY_CURSOR_LEFT == keyCode ||
- Dali::DALI_KEY_CURSOR_RIGHT == keyCode ||
- Dali::DALI_KEY_CURSOR_UP == keyCode ||
- Dali::DALI_KEY_CURSOR_DOWN == keyCode )
+ else if( Dali::DALI_KEY_CURSOR_DOWN == keyCode )
{
- HandleCursorKey( keyCode );
- }
- else if ( event.p2.mString )
- {
- HandleKeyString( event.p2.mString );
-
- delete [] event.p2.mString;
+ // TODO
}
}
*/
vector<Event> mEventQueue; ///< The queue of touch events etc.
- State mState;
+ State mState; ///< Selection mode, edit mode etc.
- bool mDecoratorUpdated : 1;
- bool mCursorBlinkEnabled : 1;
+ CharacterIndex mPrimaryCursorPosition; ///< Index into logical model for primary cursor
+ CharacterIndex mSecondaryCursorPosition; ///< Index into logical model for secondary cursor
+
+ bool mDecoratorUpdated : 1; ///< True if the decorator was updated during event processing
+ bool mCursorBlinkEnabled : 1; ///< True if cursor should blink when active
};
struct Controller::FontDefaults
mFontClient(),
mView(),
mLayoutEngine(),
- mNewText(),
+ mModifyEvents(),
mControlSize(),
mOperationsPending( NO_OPERATION ),
mRecalculateNaturalSize( true )
TextAbstraction::FontClient mFontClient; ///< Handle to the font client.
View mView; ///< The view interface to the rendering back-end.
LayoutEngine mLayoutEngine; ///< The layout engine.
- std::string mNewText; ///< Temporary stores the text set until the next relayout.
+ std::vector<ModifyEvent> mModifyEvents; ///< Temporary stores the text set until the next relayout.
Size mControlSize; ///< The size of the control.
OperationsMask mOperationsPending; ///< Operations pending to be done to layout the text.
bool mRecalculateNaturalSize:1; ///< Whether the natural size needs to be recalculated.
void Controller::SetText( const std::string& text )
{
- // Keep until size negotiation
- mImpl->mNewText = text;
+ // Cancel previously queued inserts etc.
+ mImpl->mModifyEvents.clear();
- // All operations need to be done. (convert to utf32, get break info, ..., layout, ...)
- mImpl->mOperationsPending = ALL_OPERATIONS;
-
- // The natural size needs to be re-calculated.
- mImpl->mRecalculateNaturalSize = true;
-
- // Reset buffers.
- mImpl->mLogicalModel->SetText( NULL, 0u );
- mImpl->mLogicalModel->SetScripts( NULL, 0u );
- mImpl->mLogicalModel->SetFonts( NULL, 0u );
- mImpl->mLogicalModel->SetLineBreakInfo( NULL, 0u );
- mImpl->mLogicalModel->SetWordBreakInfo( NULL, 0u );
- mImpl->mLogicalModel->SetBidirectionalInfo( NULL, 0u );
- mImpl->mLogicalModel->SetVisualToLogicalMap( NULL, 0u );
- mImpl->mVisualModel->SetGlyphs( NULL, NULL, NULL, 0u );
- mImpl->mVisualModel->SetGlyphPositions( NULL, 0u );
- mImpl->mVisualModel->SetLines( NULL, 0u );
+ // Keep until size negotiation
+ ModifyEvent event;
+ event.type = REPLACE_TEXT;
+ event.text = text;
+ mImpl->mModifyEvents.push_back( event );
if( mImpl->mTextInput )
{
void Controller::GetText( std::string& text ) const
{
- if( !mImpl->mNewText.empty() )
+ if( !mImpl->mModifyEvents.empty() &&
+ REPLACE_TEXT == mImpl->mModifyEvents[0].type )
{
- text = mImpl->mNewText;
+ text = mImpl->mModifyEvents[0].text;
}
else
{
{
Vector3 naturalSize;
+ // Make sure the model is up-to-date before layouting
+ ProcessModifyEvents();
+
if( mImpl->mRecalculateNaturalSize )
{
// Operations that can be done only once until the text changes.
VALIDATE_FONTS |
GET_LINE_BREAKS |
GET_WORD_BREAKS |
+ BIDI_INFO |
SHAPE_TEXT |
GET_GLYPH_METRICS );
// Make sure the model is up-to-date before layouting
- ReplaceText( onlyOnceOperations );
+ UpdateModel( onlyOnceOperations );
// Operations that need to be done if the size changes.
const OperationsMask sizeOperations = static_cast<OperationsMask>( LAYOUT |
+ ALIGN |
REORDER );
DoRelayout( Size( MAX_FLOAT, MAX_FLOAT ),
float Controller::GetHeightForWidth( float width )
{
+ // Make sure the model is up-to-date before layouting
+ ProcessModifyEvents();
+
Size layoutSize;
if( width != mImpl->mControlSize.width )
{
VALIDATE_FONTS |
GET_LINE_BREAKS |
GET_WORD_BREAKS |
+ BIDI_INFO |
SHAPE_TEXT |
GET_GLYPH_METRICS );
-
// Make sure the model is up-to-date before layouting
- ReplaceText( onlyOnceOperations );
+ UpdateModel( onlyOnceOperations );
// Operations that need to be done if the size changes.
const OperationsMask sizeOperations = static_cast<OperationsMask>( LAYOUT |
+ ALIGN |
REORDER );
DoRelayout( Size( width, MAX_FLOAT ),
// Operations that need to be done if the size changes.
mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
LAYOUT |
+ ALIGN |
UPDATE_ACTUAL_SIZE |
REORDER );
}
// Make sure the model is up-to-date before layouting
- ReplaceText( mImpl->mOperationsPending );
+ ProcessModifyEvents();
+ UpdateModel( mImpl->mOperationsPending );
Size layoutSize;
bool updated = DoRelayout( mImpl->mControlSize,
return updated;
}
-void Controller::ReplaceText( OperationsMask operationsRequired )
+void Controller::ProcessModifyEvents()
{
- // Calculate the operations to be done.
- const OperationsMask operations = static_cast<OperationsMask>( mImpl->mOperationsPending & operationsRequired );
+ std::vector<ModifyEvent>& events = mImpl->mModifyEvents;
+
+ for( unsigned int i=0; i<events.size(); ++i )
+ {
+ if( REPLACE_TEXT == events[0].type )
+ {
+ // A (single) replace event should come first, otherwise we wasted time processing NOOP events
+ DALI_ASSERT_DEBUG( 0 == i && "Unexpected REPLACE event" );
+
+ ReplaceTextEvent( events[0].text );
+ }
+ else if( INSERT_TEXT == events[0].type )
+ {
+ InsertTextEvent( events[0].text );
+ }
+ else if( DELETE_TEXT == events[0].type )
+ {
+ DeleteTextEvent();
+ }
+ }
+
+ // Discard temporary text
+ events.clear();
+}
+void Controller::ReplaceTextEvent( const std::string& text )
+{
+ // Reset buffers.
+ mImpl->mLogicalModel->mText.Clear();
+ mImpl->mLogicalModel->mScriptRuns.Clear();
+ mImpl->mLogicalModel->mFontRuns.Clear();
+ mImpl->mLogicalModel->mLineBreakInfo.Clear();
+ mImpl->mLogicalModel->mWordBreakInfo.Clear();
+ mImpl->mLogicalModel->mBidirectionalParagraphInfo.Clear();
+ mImpl->mLogicalModel->mBidirectionalLineInfo.Clear();
+ mImpl->mLogicalModel->mLogicalToVisualMap.Clear();
+ mImpl->mLogicalModel->mVisualToLogicalMap.Clear();
+ mImpl->mVisualModel->mGlyphs.Clear();
+ mImpl->mVisualModel->mGlyphsToCharacters.Clear();
+ mImpl->mVisualModel->mCharactersToGlyph.Clear();
+ mImpl->mVisualModel->mCharactersPerGlyph.Clear();
+ mImpl->mVisualModel->mGlyphsPerCharacter.Clear();
+ mImpl->mVisualModel->mGlyphPositions.Clear();
+ mImpl->mVisualModel->mLines.Clear();
+
+ // Convert text into UTF-32
Vector<Character>& utf32Characters = mImpl->mLogicalModel->mText;
- if( CONVERT_TO_UTF32 & operations )
+ utf32Characters.Resize( text.size() );
+
+ // This is a bit horrible but std::string returns a (signed) char*
+ const uint8_t* utf8 = reinterpret_cast<const uint8_t*>( text.c_str() );
+
+ // Transform a text array encoded in utf8 into an array encoded in utf32.
+ // It returns the actual number of characters.
+ Length characterCount = Utf8ToUtf32( utf8, text.size(), utf32Characters.Begin() );
+ utf32Characters.Resize( characterCount );
+
+ // Reset the cursor position
+ if( mImpl->mTextInput )
+ {
+ mImpl->mTextInput->mPrimaryCursorPosition = characterCount;
+ // TODO - handle secondary cursor
+ }
+
+ // The natural size needs to be re-calculated.
+ mImpl->mRecalculateNaturalSize = true;
+
+ // Apply modifications to the model
+ mImpl->mOperationsPending = ALL_OPERATIONS;
+ UpdateModel( ALL_OPERATIONS );
+ mImpl->mOperationsPending = static_cast<OperationsMask>( LAYOUT |
+ ALIGN |
+ UPDATE_ACTUAL_SIZE |
+ REORDER );
+}
+
+void Controller::InsertTextEvent( const std::string& text )
+{
+ DALI_ASSERT_DEBUG( NULL != mImpl->mTextInput && "Unexpected InsertTextEvent" );
+
+ // TODO - Optimize this
+ mImpl->mLogicalModel->mScriptRuns.Clear();
+ mImpl->mLogicalModel->mFontRuns.Clear();
+ mImpl->mLogicalModel->mLineBreakInfo.Clear();
+ mImpl->mLogicalModel->mWordBreakInfo.Clear();
+ mImpl->mLogicalModel->mBidirectionalParagraphInfo.Clear();
+ mImpl->mVisualModel->mGlyphs.Clear();
+
+ // Convert text into UTF-32
+ Vector<Character> utf32Characters;
+ utf32Characters.Resize( text.size() );
+
+ // This is a bit horrible but std::string returns a (signed) char*
+ const uint8_t* utf8 = reinterpret_cast<const uint8_t*>( text.c_str() );
+
+ // Transform a text array encoded in utf8 into an array encoded in utf32.
+ // It returns the actual number of characters.
+ Length characterCount = Utf8ToUtf32( utf8, text.size(), utf32Characters.Begin() );
+ utf32Characters.Resize( characterCount );
+
+ // Insert at current cursor position
+ Vector<Character>& modifyText = mImpl->mLogicalModel->mText;
+ CharacterIndex& cursorIndex = mImpl->mTextInput->mPrimaryCursorPosition;
+
+ if( cursorIndex < modifyText.Count() )
+ {
+ modifyText.Insert( modifyText.Begin() + cursorIndex, utf32Characters.Begin(), utf32Characters.End() );
+ }
+ else
{
- std::string& text = mImpl->mNewText;
+ modifyText.Insert( modifyText.End(), utf32Characters.Begin(), utf32Characters.End() );
+ }
- // Convert text into UTF-32
- utf32Characters.Resize( text.size() );
+ // Advance the cursor position
+ ++cursorIndex;
- // This is a bit horrible but std::string returns a (signed) char*
- const uint8_t* utf8 = reinterpret_cast<const uint8_t*>( text.c_str() );
+ // The natural size needs to be re-calculated.
+ mImpl->mRecalculateNaturalSize = true;
- // Transform a text array encoded in utf8 into an array encoded in utf32.
- // It returns the actual number of characters.
- const Length characterCount = Utf8ToUtf32( utf8, text.size(), utf32Characters.Begin() );
- utf32Characters.Resize( characterCount );
+ // Apply modifications to the model; TODO - Optimize this
+ mImpl->mOperationsPending = ALL_OPERATIONS;
+ UpdateModel( ALL_OPERATIONS );
+ mImpl->mOperationsPending = static_cast<OperationsMask>( LAYOUT |
+ ALIGN |
+ UPDATE_ACTUAL_SIZE |
+ REORDER );
+}
- // Discard temporary text
- text.clear();
+void Controller::DeleteTextEvent()
+{
+ DALI_ASSERT_DEBUG( NULL != mImpl->mTextInput && "Unexpected InsertTextEvent" );
+
+ // TODO - Optimize this
+ mImpl->mLogicalModel->mScriptRuns.Clear();
+ mImpl->mLogicalModel->mFontRuns.Clear();
+ mImpl->mLogicalModel->mLineBreakInfo.Clear();
+ mImpl->mLogicalModel->mWordBreakInfo.Clear();
+ mImpl->mLogicalModel->mBidirectionalParagraphInfo.Clear();
+ mImpl->mVisualModel->mGlyphs.Clear();
+
+ // Delte at current cursor position
+ Vector<Character>& modifyText = mImpl->mLogicalModel->mText;
+ CharacterIndex& cursorIndex = mImpl->mTextInput->mPrimaryCursorPosition;
+
+ if( cursorIndex > 0 &&
+ cursorIndex-1 < modifyText.Count() )
+ {
+ modifyText.Remove( modifyText.Begin() + cursorIndex - 1 );
+
+ // Cursor position retreat
+ --cursorIndex;
}
+ // The natural size needs to be re-calculated.
+ mImpl->mRecalculateNaturalSize = true;
+
+ // Apply modifications to the model; TODO - Optimize this
+ mImpl->mOperationsPending = ALL_OPERATIONS;
+ UpdateModel( ALL_OPERATIONS );
+ mImpl->mOperationsPending = static_cast<OperationsMask>( LAYOUT |
+ ALIGN |
+ UPDATE_ACTUAL_SIZE |
+ REORDER );
+}
+
+void Controller::UpdateModel( OperationsMask operationsRequired )
+{
+ // Calculate the operations to be done.
+ const OperationsMask operations = static_cast<OperationsMask>( mImpl->mOperationsPending & operationsRequired );
+
+ Vector<Character>& utf32Characters = mImpl->mLogicalModel->mText;
+
const Length numberOfCharacters = mImpl->mLogicalModel->GetNumberOfCharacters();
Vector<LineBreakInfo>& lineBreakInfo = mImpl->mLogicalModel->mLineBreakInfo;
}
}
+ Vector<Character> mirroredUtf32Characters;
+ bool textMirrored = false;
if( BIDI_INFO & operations )
{
// Count the number of LINE_NO_BREAK to reserve some space for the vector of paragraph's
scripts,
lineBreakInfo,
bidirectionalInfo );
+
+ if( 0u != bidirectionalInfo.Count() )
+ {
+ // This paragraph has right to left text. Some characters may need to be mirrored.
+ // TODO: consider if the mirrored string can be stored as well.
+
+ textMirrored = GetMirroredText( utf32Characters, mirroredUtf32Characters );
+ }
}
Vector<GlyphInfo>& glyphs = mImpl->mVisualModel->mGlyphs;
Vector<Length>& charactersPerGlyph = mImpl->mVisualModel->mCharactersPerGlyph;
if( SHAPE_TEXT & operations )
{
+ const Vector<Character>& textToShape = textMirrored ? mirroredUtf32Characters : utf32Characters;
// Shapes the text.
- ShapeText( utf32Characters,
+ ShapeText( textToShape,
lineBreakInfo,
scripts,
validFonts,
// after the first time the text has been laid out.
// Fill the vectors again.
- const Length numberOfCharacters = mImpl->mLogicalModel->GetNumberOfCharacters();
Length numberOfGlyphs = mImpl->mVisualModel->GetNumberOfGlyphs();
Vector<LineBreakInfo>& lineBreakInfo = mImpl->mLogicalModel->mLineBreakInfo;
// Set the layout parameters.
LayoutParameters layoutParameters( size,
+ mImpl->mLogicalModel->mText.Begin(),
lineBreakInfo.Begin(),
wordBreakInfo.Begin(),
numberOfGlyphs,
// some re-allocations.
Vector<LineRun>& lines = mImpl->mVisualModel->mLines;
+ // Delete any previous laid out lines before setting the new ones.
+ lines.Clear();
+
+ // The capacity of the bidirectional paragraph info is the number of paragraphs.
+ lines.Reserve( mImpl->mLogicalModel->mBidirectionalParagraphInfo.Capacity() );
+
// Resize the vector of positions to have the same size than the vector of glyphs.
Vector<Vector2>& glyphPositions = mImpl->mVisualModel->mGlyphPositions;
glyphPositions.Resize( numberOfGlyphs );
- BidirectionalRunIndex firstBidiRunIndex = 0u;
- Length numberOfBidiRuns = 0u;
- mImpl->mLogicalModel->GetNumberOfBidirectionalInfoRuns( 0u, numberOfCharacters, firstBidiRunIndex, numberOfBidiRuns );
-
- // Delete any previous laid out lines before setting the new ones.
- lines.Clear();
- lines.Reserve( numberOfBidiRuns );
-
// Update the visual model.
viewUpdated = mImpl->mLayoutEngine.LayoutText( layoutParameters,
glyphPositions,
free( bidiLineInfo.visualToLogicalMap );
}
}
+ } // REORDER
+
+ if( ALIGN & operations )
+ {
+ mImpl->mLayoutEngine.Align( layoutParameters,
+ lines,
+ glyphPositions );
}
// Sets the actual size.
{
mImpl->mVisualModel->SetActualSize( layoutSize );
}
- }
+ } // view updated
}
else
{
{
DALI_ASSERT_DEBUG( mImpl->mTextInput && "Unexpected KeyEvent" );
- if( mImpl->mTextInput )
+ if( mImpl->mTextInput &&
+ keyEvent.state == KeyEvent::Down )
{
- TextInput::Event event( TextInput::KEY_EVENT );
- event.p1.mInt = keyEvent.keyCode;
- event.p2.mString = NULL;
-
+ int keyCode = keyEvent.keyCode;
const std::string& keyString = keyEvent.keyPressed;
- if ( !keyString.empty() )
+
+ // Pre-process to separate modifying events from non-modifying input events.
+ if( Dali::DALI_KEY_ESCAPE == keyCode )
{
- event.p2.mString = new char[keyString.size() + 1];
- std::copy(keyString.begin(), keyString.end(), event.p2.mString);
- event.p2.mString[keyString.size()] = '\0';
+ // Escape key is a special case which causes focus loss
+ KeyboardFocusLostEvent();
+ }
+ else if( Dali::DALI_KEY_CURSOR_LEFT == keyCode ||
+ Dali::DALI_KEY_CURSOR_RIGHT == keyCode ||
+ Dali::DALI_KEY_CURSOR_UP == keyCode ||
+ Dali::DALI_KEY_CURSOR_DOWN == keyCode )
+ {
+ TextInput::Event event( TextInput::CURSOR_KEY_EVENT );
+ event.p1.mInt = keyCode;
+ mImpl->mTextInput->mEventQueue.push_back( event );
+ }
+ else if( Dali::DALI_KEY_BACKSPACE == keyCode )
+ {
+ // Queue a delete event
+ ModifyEvent event;
+ event.type = DELETE_TEXT;
+ mImpl->mModifyEvents.push_back( event );
+ }
+ else if( !keyString.empty() )
+ {
+ // Queue an insert event
+ ModifyEvent event;
+ event.type = INSERT_TEXT;
+ event.text = keyString;
+ mImpl->mModifyEvents.push_back( event );
}
-
- mImpl->mTextInput->mEventQueue.push_back( event );
RequestRelayout();
}
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