// Under Windows, change this to 1
// to use wxGenericDragImage
-#define wxUSE_GENERIC_DRAGIMAGE 0
+#define wxUSE_GENERIC_DRAGIMAGE 1
#if wxUSE_GENERIC_DRAGIMAGE
#include "wx/generic/dragimgg.h"
#include "dragimag.h"
-#if defined(__WXGTK__) || defined(__WXMOTIF__)
-#include "mondrian.xpm"
-#include "dragicon.xpm"
+#ifndef wxHAS_IMAGES_IN_RESOURCES
+ #include "../sample.xpm"
+ #include "dragicon.xpm"
#endif
// main program
PrepareDC( dc );
DrawShapes(dc);
-
}
void MyCanvas::OnEraseBackground(wxEraseEvent& event)
{
- if (wxGetApp().GetBackgroundBitmap().Ok())
+ if (wxGetApp().GetBackgroundBitmap().IsOk())
{
wxSize sz = GetClientSize();
wxRect rect(0, 0, sz.x, sz.y);
-
+
if (event.GetDC())
{
wxGetApp().TileBitmap(rect, *(event.GetDC()), wxGetApp().GetBackgroundBitmap());
if (!m_draggedShape || !m_dragImage)
return;
- wxPoint newPos(m_draggedShape->GetPosition().x + (event.GetPosition().x - m_dragStartPos.x),
- m_draggedShape->GetPosition().y + (event.GetPosition().y - m_dragStartPos.y));
-
- m_draggedShape->SetPosition(newPos);
+ m_draggedShape->SetPosition(m_draggedShape->GetPosition()
+ + event.GetPosition() - m_dragStartPos);
m_dragImage->Hide();
m_dragImage->EndDrag();
- delete m_dragImage;
- m_dragImage = NULL;
+ wxDELETE(m_dragImage);
- wxClientDC dc(this);
- if (m_currentlyHighlighted)
- {
- m_currentlyHighlighted->Draw(dc);
- }
- m_draggedShape->SetShow(TRUE);
- m_draggedShape->Draw(dc);
+ m_draggedShape->SetShow(true);
m_currentlyHighlighted = (DragShape*) NULL;
m_draggedShape = (DragShape*) NULL;
+
+ Refresh(true);
}
else if (event.Dragging() && m_dragMode != TEST_DRAG_NONE)
{
if (dx <= tolerance && dy <= tolerance)
return;
- wxPoint newPos(m_draggedShape->GetPosition().x + (event.GetPosition().x - m_dragStartPos.x),
- m_draggedShape->GetPosition().y + (event.GetPosition().y - m_dragStartPos.y));
-
// Start the drag.
m_dragMode = TEST_DRAG_DRAGGING;
delete m_dragImage;
// Erase the dragged shape from the canvas
- m_draggedShape->SetShow(FALSE);
- wxClientDC dc(this);
- EraseShape(m_draggedShape, dc);
- DrawShapes(dc);
+ m_draggedShape->SetShow(false);
+
+ // redraw immediately
+ Refresh(true);
+ Update();
switch (m_draggedShape->GetDragMethod())
{
case SHAPE_DRAG_BITMAP:
{
- wxPoint hotSpot(event.GetPosition().x - newPos.x, event.GetPosition().y - newPos.y);
- m_dragImage = new wxDragImage(m_draggedShape->GetBitmap(), wxCursor(wxCURSOR_HAND), hotSpot);
+ m_dragImage = new MyDragImage(this, m_draggedShape->GetBitmap(), wxCursor(wxCURSOR_HAND));
break;
}
case SHAPE_DRAG_TEXT:
{
- wxPoint hotSpot(event.GetPosition().x - newPos.x, event.GetPosition().y - newPos.y);
- m_dragImage = new wxDragImage("Dragging some test text", wxCursor(wxCURSOR_HAND), hotSpot);
+ m_dragImage = new MyDragImage(this, wxString(wxT("Dragging some test text")), wxCursor(wxCURSOR_HAND));
break;
}
case SHAPE_DRAG_ICON:
{
- wxPoint hotSpot(event.GetPosition().x - newPos.x, event.GetPosition().y - newPos.y);
-
- // Can anyone explain why this test is necessary,
- // to prevent a gcc error?
-#ifdef __WXMOTIF__
- wxIcon icon(dragicon_xpm);
-#else
- wxIcon icon(wxICON(dragicon));
-#endif
-
- m_dragImage = new wxDragImage(icon, wxCursor(wxCURSOR_HAND), hotSpot);
+ m_dragImage = new MyDragImage(this, wxICON(dragicon), wxCursor(wxCURSOR_HAND));
break;
}
}
- bool fullScreen = FALSE;
- if (wxGetApp().GetUseScreen())
- {
- newPos = ClientToScreen(newPos);
- fullScreen = TRUE;
- }
+ bool fullScreen = wxGetApp().GetUseScreen();
- bool retValue;
+ // The offset between the top-left of the shape image and the current shape position
+ wxPoint beginDragHotSpot = m_dragStartPos - m_draggedShape->GetPosition();
- if (fullScreen)
- // This line uses the whole screen...
- retValue = m_dragImage->BeginDrag(wxPoint(0, 0), this, TRUE);
- // while this line restricts dragging to the parent frame.
- // retValue = m_dragImage->BeginDrag(wxPoint(0, 0), this, GetParent());
- else
- retValue = m_dragImage->BeginDrag(wxPoint(0, 0), this);
+ // Now we do this inside the implementation: always assume
+ // coordinates relative to the capture window (client coordinates)
- if (!retValue)
+ //if (fullScreen)
+ // beginDragHotSpot -= ClientToScreen(wxPoint(0, 0));
+
+ if (!m_dragImage->BeginDrag(beginDragHotSpot, this, fullScreen))
{
- delete m_dragImage;
- m_dragImage = (wxDragImage*) NULL;
+ wxDELETE(m_dragImage);
m_dragMode = TEST_DRAG_NONE;
+
+ } else
+ {
+ m_dragImage->Move(event.GetPosition());
+ m_dragImage->Show();
}
- m_dragImage->Move(newPos);
- m_dragImage->Show();
}
else if (m_dragMode == TEST_DRAG_DRAGGING)
{
// We're currently dragging. See if we're over another shape.
DragShape* onShape = FindShape(event.GetPosition());
- bool mustUnhighlightOld = FALSE;
- bool mustHighlightNew = FALSE;
+ bool mustUnhighlightOld = false;
+ bool mustHighlightNew = false;
if (m_currentlyHighlighted)
{
if ((onShape == (DragShape*) NULL) || (m_currentlyHighlighted != onShape))
- mustUnhighlightOld = TRUE;
+ mustUnhighlightOld = true;
}
if (onShape && (onShape != m_currentlyHighlighted) && onShape->IsShown())
- mustHighlightNew = TRUE;
+ mustHighlightNew = true;
if (mustUnhighlightOld || mustHighlightNew)
m_dragImage->Hide();
// Now with the drag image switched off, we can change the window contents.
-
if (mustUnhighlightOld)
- {
- wxClientDC clientDC(this);
- m_currentlyHighlighted->Draw(clientDC);
m_currentlyHighlighted = (DragShape*) NULL;
- }
+
if (mustHighlightNew)
- {
- wxClientDC clientDC(this);
m_currentlyHighlighted = onShape;
- m_currentlyHighlighted->Draw(clientDC, wxINVERT);
- }
-
- wxPoint newPos(m_draggedShape->GetPosition().x + (event.GetPosition().x - m_dragStartPos.x),
- m_draggedShape->GetPosition().y + (event.GetPosition().y - m_dragStartPos.y));
- if (wxGetApp().GetUseScreen())
+ if (mustUnhighlightOld || mustHighlightNew)
{
- newPos = ClientToScreen(newPos);
+ Refresh(mustUnhighlightOld);
+ Update();
}
// Move and show the image again
- m_dragImage->Move(newPos);
+ m_dragImage->Move(event.GetPosition());
if (mustUnhighlightOld || mustHighlightNew)
m_dragImage->Show();
void MyCanvas::DrawShapes(wxDC& dc)
{
- wxNode* node = m_displayList.First();
+ wxList::compatibility_iterator node = m_displayList.GetFirst();
while (node)
{
- DragShape* shape = (DragShape*) node->Data();
- if (shape->IsShown())
- shape->Draw(dc);
- node = node->Next();
+ DragShape* shape = (DragShape*) node->GetData();
+ if (shape->IsShown() && m_draggedShape != shape)
+ {
+ shape->Draw(dc, (m_currentlyHighlighted == shape));
+ }
+ node = node->GetNext();
}
}
wxRect rect2(shape->GetRect());
dc.SetClippingRegion(rect2.x, rect2.y, rect2.width, rect2.height);
-
+
wxGetApp().TileBitmap(rect, dc, wxGetApp().GetBackgroundBitmap());
dc.DestroyClippingRegion();
void MyCanvas::ClearShapes()
{
- wxNode* node = m_displayList.First();
+ wxList::compatibility_iterator node = m_displayList.GetFirst();
while (node)
{
- DragShape* shape = (DragShape*) node->Data();
+ DragShape* shape = (DragShape*) node->GetData();
delete shape;
- node = node->Next();
+ node = node->GetNext();
}
m_displayList.Clear();
}
DragShape* MyCanvas::FindShape(const wxPoint& pt) const
{
- wxNode* node = m_displayList.First();
+ wxList::compatibility_iterator node = m_displayList.GetFirst();
while (node)
{
- DragShape* shape = (DragShape*) node->Data();
+ DragShape* shape = (DragShape*) node->GetData();
if (shape->HitTest(pt))
return shape;
- node = node->Next();
+ node = node->GetNext();
}
return (DragShape*) NULL;
}
// MyFrame
-
IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
BEGIN_EVENT_TABLE(MyFrame,wxFrame)
END_EVENT_TABLE()
MyFrame::MyFrame()
- : wxFrame( (wxFrame *)NULL, -1, "wxDragImage sample",
- wxPoint(20,20), wxSize(470,360) )
+: wxFrame( (wxFrame *)NULL, wxID_ANY, wxT("wxDragImage sample"),
+ wxPoint(20,20), wxSize(470,360) )
{
- wxMenu *file_menu = new wxMenu();
- file_menu->Append( wxID_ABOUT, "&About...");
- file_menu->Append( TEST_USE_SCREEN, "&Use whole screen for dragging", "Use whole screen", TRUE);
- file_menu->Append( wxID_EXIT, "E&xit");
+ wxMenu *file_menu = new wxMenu();
+ file_menu->Append( wxID_ABOUT, wxT("&About"));
+ file_menu->AppendCheckItem( TEST_USE_SCREEN, wxT("&Use whole screen for dragging"), wxT("Use whole screen"));
+ file_menu->Append( wxID_EXIT, wxT("E&xit"));
- wxMenuBar *menu_bar = new wxMenuBar();
- menu_bar->Append(file_menu, "&File");
+ wxMenuBar *menu_bar = new wxMenuBar();
+ menu_bar->Append(file_menu, wxT("&File"));
- SetMenuBar( menu_bar );
+ SetIcon(wxICON(sample));
+ SetMenuBar( menu_bar );
- CreateStatusBar(2);
- int widths[] = { -1, 100 };
- SetStatusWidths( 2, widths );
+#if wxUSE_STATUSBAR
+ CreateStatusBar(2);
+ int widths[] = { -1, 100 };
+ SetStatusWidths( 2, widths );
+#endif // wxUSE_STATUSBAR
- m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
+ m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
}
void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
{
- Close( TRUE );
+ Close( true );
}
void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
{
- (void)wxMessageBox( "wxDragImage demo\n"
- "Julian Smart (c) 2000",
- "About wxDragImage Demo", wxICON_INFORMATION | wxOK );
+ (void)wxMessageBox( wxT("wxDragImage demo\n")
+ wxT("Julian Smart (c) 2000"),
+ wxT("About wxDragImage Demo"),
+ wxICON_INFORMATION | wxOK );
}
//-----------------------------------------------------------------------------
MyApp::MyApp()
{
// Drag across whole screen
- m_useScreen = FALSE;
+ m_useScreen = false;
}
bool MyApp::OnInit()
{
+ if ( !wxApp::OnInit() )
+ return false;
+
#if wxUSE_LIBPNG
wxImage::AddHandler( new wxPNGHandler );
#endif
wxImage image;
- if (image.LoadFile("backgrnd.png", wxBITMAP_TYPE_PNG))
+ if (image.LoadFile(wxT("backgrnd.png"), wxBITMAP_TYPE_PNG))
{
- m_background = image.ConvertToBitmap();
+ m_background = wxBitmap(image);
}
-
MyFrame *frame = new MyFrame();
- wxString rootName("shape0");
+ wxString rootName(wxT("shape0"));
- int i;
- for (i = 1; i < 4; i++)
+ for (int i = 1; i < 4; i++)
{
- wxString filename;
- filename.Printf("%s%d.png", (const char*) rootName, i);
- if (image.LoadFile(filename, wxBITMAP_TYPE_PNG))
+ /* For some reason under wxX11, the 2nd LoadFile in this loop fails, with
+ a BadMatch inside CreateFromImage (inside ConvertToBitmap). This happens even if you copy
+ the first file over the second file. */
+ if (image.LoadFile(wxString::Format("%s%d.png", rootName, i), wxBITMAP_TYPE_PNG))
{
- DragShape* newShape = new DragShape(image.ConvertToBitmap());
+ DragShape* newShape = new DragShape(wxBitmap(image));
newShape->SetPosition(wxPoint(i*50, i*50));
if (i == 2)
m_background = bitmap;
#endif
- frame->Show( TRUE );
+ frame->Show( true );
+
+ return true;
+}
- return TRUE;
+int MyApp::OnExit()
+{
+ return 0;
}
bool MyApp::TileBitmap(const wxRect& rect, wxDC& dc, wxBitmap& bitmap)
{
int w = bitmap.GetWidth();
int h = bitmap.GetHeight();
-
+
int i, j;
for (i = rect.x; i < rect.x + rect.width; i += w)
{
for (j = rect.y; j < rect.y + rect.height; j+= h)
dc.DrawBitmap(bitmap, i, j);
}
- return TRUE;
+ return true;
}
-void MyApp::OnUseScreen(wxCommandEvent& event)
+void MyApp::OnUseScreen(wxCommandEvent& WXUNUSED(event))
{
m_useScreen = !m_useScreen;
}
m_pos.x = 0;
m_pos.y = 0;
m_dragMethod = SHAPE_DRAG_BITMAP;
- m_show = TRUE;
-}
-
-DragShape::~DragShape()
-{
+ m_show = true;
}
bool DragShape::HitTest(const wxPoint& pt) const
{
wxRect rect(GetRect());
- return rect.Inside(pt.x, pt.y);
+ return rect.Contains(pt.x, pt.y);
}
-bool DragShape::Draw(wxDC& dc, int op)
+bool DragShape::Draw(wxDC& dc, bool highlight)
{
- if (m_bitmap.Ok())
+ if (m_bitmap.IsOk())
{
wxMemoryDC memDC;
memDC.SelectObject(m_bitmap);
-
+
dc.Blit(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight(),
- & memDC, 0, 0, op, TRUE);
+ & memDC, 0, 0, wxCOPY, true);
+
+ if (highlight)
+ {
+ dc.SetPen(*wxWHITE_PEN);
+ dc.SetBrush(*wxTRANSPARENT_BRUSH);
+ dc.DrawRectangle(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight());
+ }
- return TRUE;
+ return true;
}
else
- return FALSE;
+ return false;
+}
+
+// MyDragImage
+
+// On some platforms, notably Mac OS X with Core Graphics, we can't blit from
+// a window, so we need to draw the background explicitly.
+bool MyDragImage::UpdateBackingFromWindow(wxDC& WXUNUSED(windowDC), wxMemoryDC& destDC, const wxRect& WXUNUSED(sourceRect),
+ const wxRect& destRect) const
+{
+ destDC.SetClippingRegion(destRect);
+
+ if (wxGetApp().GetBackgroundBitmap().IsOk())
+ wxGetApp().TileBitmap(destRect, destDC, wxGetApp().GetBackgroundBitmap());
+
+ m_canvas->DrawShapes(destDC);
+ return true;
}
projects / wxWidgets.git / blobdiff