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Add visual drag hint

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58285 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2009-01-21 22:58:56 +00:00
parent 6237c88049
commit 818d91a9d7
1 changed files with 186 additions and 4 deletions
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190
src/generic/datavgen.cpp
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@@ -34,6 +34,7 @@
#include "wx/settings.h"
#include "wx/msgdlg.h"
#include "wx/dcscreen.h"
#include "wx/frame.h"
#endif
#include "wx/stockitem.h"
@@ -416,6 +417,7 @@ public:
wxDataViewCtrl *GetOwner() { return m_owner; }
const wxDataViewCtrl *GetOwner() const { return m_owner; }
wxBitmap CreateItemBitmap( unsigned int row, int &indent );
void OnPaint( wxPaintEvent &event );
void OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event);
void OnChar( wxKeyEvent &event );
@@ -1138,6 +1140,83 @@ wxDataViewIconTextRenderer::GetValueFromEditorCtrl(wxControl* WXUNUSED(editor),
// wxDataViewDropTarget
//-----------------------------------------------------------------------------
class wxBitmapCanvas: public wxWindow
{
public:
wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
{
m_bitmap = bitmap;
Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
}
void OnPaint( wxPaintEvent &WXUNUSED(event) )
{
wxPaintDC dc(this);
dc.DrawBitmap( m_bitmap, 0, 0);
}
wxBitmap m_bitmap;
};
class wxDataViewDropSource: public wxDropSource
{
public:
wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
wxDropSource( win )
{
m_win = win;
m_row = row;
m_hint = NULL;
}
~wxDataViewDropSource()
{
delete m_hint;
}
virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
{
wxPoint pos = wxGetMousePosition();
if (!m_hint)
{
int liney = m_win->GetLineStart( m_row );
int linex = 0;
m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
m_win->ClientToScreen( &linex, &liney );
m_dist_x = pos.x - linex;
m_dist_y = pos.y - liney;
int indent = 0;
wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
m_dist_x -= indent;
m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
wxPoint(pos.x - m_dist_x, pos.y + 5 ),
ib.GetSize(),
wxFRAME_TOOL_WINDOW |
wxFRAME_FLOAT_ON_PARENT |
wxFRAME_NO_TASKBAR |
wxNO_BORDER );
new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
m_hint->Show();
}
else
{
m_hint->Move( pos.x - m_dist_x, pos.y + 5 );
m_hint->SetTransparent( 128 );
}
return false;
}
wxDataViewMainWindow *m_win;
unsigned int m_row;
wxFrame *m_hint;
int m_dist_x,m_dist_y;
};
class wxDataViewDropTarget: public wxDropTarget
{
public:
@@ -1412,6 +1491,111 @@ void wxDataViewMainWindow::OnLeave()
RemoveDropHint();
}
wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
{
int height = GetLineHeight( row );
int width = 0;
unsigned int cols = GetOwner()->GetColumnCount();
unsigned int col;
for (col = 0; col < cols; col++)
{
wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
if (column->IsHidden())
continue; // skip it!
width += column->GetWidth();
}
indent = 0;
if (!IsVirtualList())
{
wxDataViewTreeNode *node = GetTreeNodeByRow(row);
indent = GetOwner()->GetIndent() * node->GetIndentLevel();
indent = indent + m_lineHeight; //try to use the m_lineHeight as the expander space
}
width -= indent;
wxBitmap bitmap( width, height );
wxMemoryDC dc( bitmap );
dc.SetFont( GetFont() );
dc.SetPen( *wxBLACK_PEN );
dc.SetBrush( *wxWHITE_BRUSH );
dc.DrawRectangle( 0,0,width,height );
wxDataViewModel *model = m_owner->GetModel();
wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
if (!expander)
{
// TODO-RTL: last column for RTL support
expander = GetOwner()->GetColumnAt( 0 );
GetOwner()->SetExpanderColumn(expander);
}
int x = 0;
for (col = 0; col < cols; col++)
{
wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
wxDataViewRenderer *cell = column->GetRenderer();
if (column->IsHidden())
continue; // skip it!
width = column->GetWidth();
if (column == expander)
width -= indent;
wxVariant value;
wxDataViewItem item = GetItemByRow( row );
model->GetValue( value, item, column->GetModelColumn());
cell->SetValue( value );
if (cell->GetWantsAttr())
{
wxDataViewItemAttr attr;
bool ret = model->GetAttr( item, column->GetModelColumn(), attr );
if (ret)
cell->SetAttr( attr );
cell->SetHasAttr( ret );
}
wxSize size = cell->GetSize();
size.x = wxMin( 2*PADDING_RIGHTLEFT + size.x, width );
size.y = height;
wxRect item_rect(x, 0, size.x, size.y);
int align = cell->CalculateAlignment();
// horizontal alignment:
item_rect.x = x;
if (align & wxALIGN_CENTER_HORIZONTAL)
item_rect.x = x + (width / 2) - (size.x / 2);
else if (align & wxALIGN_RIGHT)
item_rect.x = x + width - size.x;
//else: wxALIGN_LEFT is the default
// vertical alignment:
item_rect.y = 0;
if (align & wxALIGN_CENTER_VERTICAL)
item_rect.y = (height / 2) - (size.y / 2);
else if (align & wxALIGN_BOTTOM)
item_rect.y = height - size.y;
//else: wxALIGN_TOP is the default
// add padding
item_rect.x += PADDING_RIGHTLEFT;
item_rect.width = size.x - 2 * PADDING_RIGHTLEFT;
//dc.SetClippingRegion( item_rect );
cell->Render( item_rect, &dc, 0 );
//dc.DestroyClippingRegion();
x += width;
}
return bitmap;
}
void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
wxDataViewModel *model = GetOwner()->GetModel();
@@ -3217,11 +3401,9 @@ void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
if (!obj)
return;
wxDropSource drag( m_owner );
wxDataViewDropSource drag( this, drag_item_row );
drag.SetData( *obj );
// wxImage image( 80, 20 );
// wxBitmap bitmap( image );
wxDragResult res = drag.DoDragDrop();
/* wxDragResult res = */ drag.DoDragDrop();
delete obj;
}
return;