mirror of
https://github.com/bulletphysics/bullet3
synced 2024-12-15 22:20:12 +00:00
411 lines
7.8 KiB
C++
411 lines
7.8 KiB
C++
/*
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GWEN
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Copyright (c) 2010 Facepunch Studios
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See license in Gwen.h
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*/
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#include "Gwen/Gwen.h"
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#include "Gwen/Controls/TextBox.h"
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#include "Gwen/Skin.h"
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#include "Gwen/Utility.h"
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#include "Gwen/Platform.h"
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#include <math.h>
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using namespace Gwen;
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using namespace Gwen::Controls;
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GWEN_CONTROL_CONSTRUCTOR( TextBox )
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{
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SetSize( 200, 20 );
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SetMouseInputEnabled( true );
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SetKeyboardInputEnabled( true );
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SetAlignment( Pos::Left | Pos::CenterV );
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SetTextPadding( Padding( 4, 2, 4, 2 ) );
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m_iCursorPos = 0;
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m_iCursorEnd = 0;
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m_bSelectAll = false;
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SetTextColor( Gwen::Color( 50, 50, 50, 255 ) ); // TODO: From Skin
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SetTabable( true );
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AddAccelerator( L"Ctrl + c", &TextBox::OnCopy );
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AddAccelerator( L"Ctrl + x", &TextBox::OnCut );
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AddAccelerator( L"Ctrl + v", &TextBox::OnPaste );
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AddAccelerator( L"Ctrl + a", &TextBox::OnSelectAll );
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}
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bool TextBox::OnChar( Gwen::UnicodeChar c )
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{
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if ( c == '\t' ) return false;
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Gwen::UnicodeString str;
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str += c;
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InsertText( str );
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return true;
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}
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void TextBox::InsertText( const Gwen::UnicodeString& strInsert )
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{
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// TODO: Make sure fits (implement maxlength)
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if ( HasSelection() )
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{
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EraseSelection();
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}
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if ( m_iCursorPos > TextLength() ) m_iCursorPos = TextLength();
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if ( !IsTextAllowed( strInsert, m_iCursorPos ) )
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return;
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UnicodeString str = GetText();
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str.insert( m_iCursorPos, strInsert );
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SetText( str );
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m_iCursorPos += (int) strInsert.size();
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m_iCursorEnd = m_iCursorPos;
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RefreshCursorBounds();
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}
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void TextBox::Render( Skin::Base* skin )
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{
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if ( ShouldDrawBackground() )
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skin->DrawTextBox( this );
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if ( !HasFocus() ) return;
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// Draw selection.. if selected..
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if ( m_iCursorPos != m_iCursorEnd )
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{
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skin->GetRender()->SetDrawColor( Gwen::Color( 50, 170, 255, 200 ) );
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skin->GetRender()->DrawFilledRect( m_rectSelectionBounds );
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}
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// Draw caret
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if ( fmod( Gwen::Platform::GetTimeInSeconds()-m_fLastInputTime, 1.0f ) > 0.5f )
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skin->GetRender()->SetDrawColor( Gwen::Color( 255, 255, 255, 255 ) );
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else
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skin->GetRender()->SetDrawColor( Gwen::Color( 0, 0, 0, 255 ) );
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skin->GetRender()->DrawFilledRect( m_rectCaretBounds );
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}
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void TextBox::RefreshCursorBounds()
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{
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m_fLastInputTime = Gwen::Platform::GetTimeInSeconds();
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MakeCaratVisible();
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Gwen::Point pA = GetCharacterPosition( m_iCursorPos );
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Gwen::Point pB = GetCharacterPosition( m_iCursorEnd );
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m_rectSelectionBounds.x = Utility::Min( pA.x, pB.x );
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m_rectSelectionBounds.y = m_Text->Y() - 1;
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m_rectSelectionBounds.w = Utility::Max( pA.x, pB.x ) - m_rectSelectionBounds.x;
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m_rectSelectionBounds.h = m_Text->Height() + 2;
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m_rectCaretBounds.x = pA.x;
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m_rectCaretBounds.y = m_Text->Y() - 1;
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m_rectCaretBounds.w = 1;
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m_rectCaretBounds.h = m_Text->Height() + 2;
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Redraw();
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}
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void TextBox::OnPaste( Gwen::Controls::Base* /*pCtrl*/ )
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{
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InsertText( Platform::GetClipboardText() );
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}
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void TextBox::OnCopy( Gwen::Controls::Base* /*pCtrl*/ )
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{
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if ( !HasSelection() ) return;
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Platform::SetClipboardText( GetSelection() );
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}
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void TextBox::OnCut( Gwen::Controls::Base* /*pCtrl*/ )
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{
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if ( !HasSelection() ) return;
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Platform::SetClipboardText( GetSelection() );
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EraseSelection();
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}
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void TextBox::OnSelectAll( Gwen::Controls::Base* /*pCtrl*/ )
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{
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m_iCursorEnd = 0;
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m_iCursorPos = TextLength();
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RefreshCursorBounds();
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}
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void TextBox::OnMouseDoubleClickLeft( int /*x*/, int /*y*/ )
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{
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OnSelectAll( this );
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}
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UnicodeString TextBox::GetSelection()
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{
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if ( !HasSelection() ) return L"";
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int iStart = Utility::Min( m_iCursorPos, m_iCursorEnd );
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int iEnd = Utility::Max( m_iCursorPos, m_iCursorEnd );
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const UnicodeString& str = GetText();
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return str.substr( iStart, iEnd - iStart );
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}
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bool TextBox::OnKeyReturn( bool bDown )
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{
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if ( bDown ) return true;
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OnEnter();
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// Try to move to the next control, as if tab had been pressed
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OnKeyTab( true );
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// If we still have focus, blur it.
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if ( HasFocus() )
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{
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Blur();
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}
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return true;
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}
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bool TextBox::OnKeyBackspace( bool bDown )
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{
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if ( !bDown ) return true;
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if ( HasSelection() )
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{
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EraseSelection();
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return true;
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}
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if ( m_iCursorPos == 0 ) return true;
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DeleteText( m_iCursorPos-1, 1 );
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return true;
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}
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bool TextBox::OnKeyDelete( bool bDown )
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{
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if ( !bDown ) return true;
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if ( HasSelection() )
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{
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EraseSelection();
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return true;
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}
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if ( m_iCursorPos >= TextLength() ) return true;
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DeleteText( m_iCursorPos, 1 );
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return true;
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}
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bool TextBox::OnKeyLeft( bool bDown )
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{
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if ( !bDown ) return true;
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if ( m_iCursorPos > 0 )
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m_iCursorPos--;
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if ( !Gwen::Input::IsShiftDown() )
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{
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m_iCursorEnd = m_iCursorPos;
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}
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RefreshCursorBounds();
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return true;
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}
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bool TextBox::OnKeyRight( bool bDown )
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{
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if ( !bDown ) return true;
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if ( m_iCursorPos < TextLength() )
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m_iCursorPos++;
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if ( !Gwen::Input::IsShiftDown() )
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{
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m_iCursorEnd = m_iCursorPos;
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}
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RefreshCursorBounds();
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return true;
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}
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bool TextBox::OnKeyHome( bool bDown )
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{
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if ( !bDown ) return true;
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m_iCursorPos = 0;
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if ( !Gwen::Input::IsShiftDown() )
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{
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m_iCursorEnd = m_iCursorPos;
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}
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RefreshCursorBounds();
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return true;
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}
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bool TextBox::OnKeyEnd( bool /*bDown*/ )
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{
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m_iCursorPos = TextLength();
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if ( !Gwen::Input::IsShiftDown() )
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{
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m_iCursorEnd = m_iCursorPos;
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}
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RefreshCursorBounds();
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return true;
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}
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void TextBox::SetCursorPos( int i )
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{
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if ( m_iCursorPos == i ) return;
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m_iCursorPos = i;
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RefreshCursorBounds();
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}
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void TextBox::SetCursorEnd( int i )
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{
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if ( m_iCursorEnd == i ) return;
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m_iCursorEnd = i;
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RefreshCursorBounds();
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}
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void TextBox::DeleteText( int iStartPos, int iLength )
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{
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UnicodeString str = GetText();
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str.erase( iStartPos, iLength );
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SetText( str );
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if ( m_iCursorPos > iStartPos )
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{
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SetCursorPos( m_iCursorPos - iLength );
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}
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SetCursorEnd( m_iCursorPos );
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}
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bool TextBox::HasSelection()
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{
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return m_iCursorPos != m_iCursorEnd;
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}
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void TextBox::EraseSelection()
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{
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int iStart = Utility::Min( m_iCursorPos, m_iCursorEnd );
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int iEnd = Utility::Max( m_iCursorPos, m_iCursorEnd );
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DeleteText( iStart, iEnd - iStart );
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// Move the cursor to the start of the selection,
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// since the end is probably outside of the string now.
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m_iCursorPos = iStart;
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m_iCursorEnd = iStart;
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}
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void TextBox::OnMouseClickLeft( int x, int y, bool bDown )
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{
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if ( m_bSelectAll )
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{
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OnSelectAll( this );
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m_bSelectAll = false;
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return;
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}
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int iChar = m_Text->GetClosestCharacter( m_Text->CanvasPosToLocal( Gwen::Point( x, y ) ) );
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if ( bDown )
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{
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SetCursorPos( iChar );
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if ( !Gwen::Input::IsShiftDown() )
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SetCursorEnd( iChar );
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Gwen::MouseFocus = this;
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}
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else
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{
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if ( Gwen::MouseFocus == this )
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{
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SetCursorPos( iChar );
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Gwen::MouseFocus = NULL;
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}
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}
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}
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void TextBox::OnMouseMoved( int x, int y, int /*deltaX*/, int /*deltaY*/ )
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{
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if ( Gwen::MouseFocus != this ) return;
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int iChar = m_Text->GetClosestCharacter( m_Text->CanvasPosToLocal( Gwen::Point( x, y ) ) );
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SetCursorPos( iChar );
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}
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void TextBox::MakeCaratVisible()
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{
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int iCaratPos = m_Text->GetCharacterPosition( m_iCursorPos ).x;
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// If the carat is already in a semi-good position, leave it.
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{
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int iRealCaratPos = iCaratPos + m_Text->X();
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if ( iRealCaratPos > Width() * 0.1f && iRealCaratPos < Width() * 0.9f )
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return;
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}
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// The ideal position is for the carat to be right in the middle
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int idealx = -iCaratPos + Width() * 0.5f;;
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// Don't show too much whitespace to the right
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if ( idealx + m_Text->Width() < Width() - m_rTextPadding.right )
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idealx = -m_Text->Width() + (Width() - m_rTextPadding.right );
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// Or the left
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if ( idealx > m_rTextPadding.left )
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idealx = m_rTextPadding.left;
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m_Text->SetPos( idealx, m_Text->Y() );
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}
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void TextBox::Layout( Skin::Base* skin )
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{
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BaseClass::Layout( skin );
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RefreshCursorBounds();
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}
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void TextBox::OnTextChanged()
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{
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if ( m_iCursorPos > TextLength() ) m_iCursorPos = TextLength();
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if ( m_iCursorEnd > TextLength() ) m_iCursorEnd = TextLength();
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onTextChanged.Call( this );
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}
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void TextBox::OnEnter()
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{
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onReturnPressed.Call( this );
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} |