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adding rubberbanding

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50882 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor 2007-12-22 08:44:35 +00:00
parent 5e1a9f05c7
commit 8a021e0074
1 changed files with 92 additions and 9 deletions
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101
samples/drawing/drawing.cpp
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@ -34,11 +34,15 @@
#include "wx/image.h"
#include "wx/artprov.h"
#include "wx/dcgraph.h"
#include "wx/overlay.h"
#define wxTEST_GRAPHICS 1
#define TEST_CAIRO_EVERYWHERE 0
#if wxTEST_GRAPHICS
#include "wx/graphics.h"
#include "wx/dcgraph.h"
#if wxUSE_GRAPHICS_CONTEXT == 0
#undef wxTEST_GRAPHICS
#define wxTEST_GRAPHICS 0
@ -171,6 +175,8 @@ public:
void OnPaint(wxPaintEvent &event);
void OnMouseMove(wxMouseEvent &event);
void OnMouseDown(wxMouseEvent &event);
void OnMouseUp(wxMouseEvent &event);
void ToShow(ScreenToShow show) { m_show = show; Refresh(); }
@ -212,6 +218,10 @@ private:
wxBitmap m_smile_bmp;
wxIcon m_std_icon;
bool m_clip;
wxOverlay m_overlay;
bool m_rubberBand;
wxPoint m_anchorpoint;
wxPoint m_currentpoint;
#if wxUSE_GRAPHICS_CONTEXT
bool m_useContext ;
#endif
@ -421,6 +431,8 @@ void MyApp::DeleteBitmaps()
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_PAINT (MyCanvas::OnPaint)
EVT_MOTION (MyCanvas::OnMouseMove)
EVT_LEFT_DOWN (MyCanvas::OnMouseDown)
EVT_LEFT_UP (MyCanvas::OnMouseUp)
END_EVENT_TABLE()
#include "smile.xpm"
@ -434,6 +446,7 @@ MyCanvas::MyCanvas(MyFrame *parent)
m_smile_bmp = wxBitmap(smile_xpm);
m_std_icon = wxArtProvider::GetIcon(wxART_INFORMATION);
m_clip = false;
m_rubberBand = false;
#if wxUSE_GRAPHICS_CONTEXT
m_useContext = false;
#endif
@ -1366,12 +1379,21 @@ void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime)
}
}
#if TEST_CAIRO_EVERYWHERE
extern wxGraphicsRenderer* gCairoRenderer;
#endif
void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
{
wxPaintDC pdc(this);
#if wxUSE_GRAPHICS_CONTEXT
#if TEST_CAIRO_EVERYWHERE
wxGCDC gdc;
gdc.SetGraphicsContext( gCairoRenderer->CreateContext( pdc ) );
#else
wxGCDC gdc( pdc ) ;
#endif
wxDC &dc = m_useContext ? (wxDC&) gdc : (wxDC&) pdc ;
#else
wxDC &dc = pdc ;
@ -1479,21 +1501,82 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
void MyCanvas::OnMouseMove(wxMouseEvent &event)
{
#if wxUSE_STATUSBAR
wxClientDC dc(this);
PrepareDC(dc);
m_owner->PrepareDC(dc);
{
wxClientDC dc(this);
PrepareDC(dc);
m_owner->PrepareDC(dc);
wxPoint pos = event.GetPosition();
long x = dc.DeviceToLogicalX( pos.x );
long y = dc.DeviceToLogicalY( pos.y );
wxString str;
str.Printf( wxT("Current mouse position: %d,%d"), (int)x, (int)y );
m_owner->SetStatusText( str );
wxPoint pos = event.GetPosition();
long x = dc.DeviceToLogicalX( pos.x );
long y = dc.DeviceToLogicalY( pos.y );
wxString str;
str.Printf( wxT("Current mouse position: %d,%d"), (int)x, (int)y );
m_owner->SetStatusText( str );
}
if ( m_rubberBand )
{
int x,y, xx, yy ;
event.GetPosition(&x,&y);
CalcUnscrolledPosition( x, y, &xx, &yy );
m_currentpoint = wxPoint( xx , yy ) ;
wxRect newrect ( m_anchorpoint , m_currentpoint ) ;
wxClientDC dc( this ) ;
PrepareDC( dc ) ;
wxDCOverlay overlaydc( m_overlay, &dc );
overlaydc.Clear();
#if __WXMAC__
dc.SetPen( *wxGREY_PEN );
dc.SetBrush( wxColour( 192,192,192,64 ) );
#else
dc.SetPen( wxPen( *wxLIGHT_GREY, 2, wxSOLID ) );
dc.SetBrush( *wxTRANSPARENT_BRUSH );
#endif
dc.DrawRectangle( newrect );
}
#else
wxUnusedVar(event);
#endif // wxUSE_STATUSBAR
}
void MyCanvas::OnMouseDown(wxMouseEvent &event)
{
int x,y,xx,yy ;
event.GetPosition(&x,&y);
CalcUnscrolledPosition( x, y, &xx, &yy );
m_anchorpoint = wxPoint( xx , yy ) ;
m_currentpoint = m_anchorpoint ;
m_rubberBand = true ;
CaptureMouse() ;
}
void MyCanvas::OnMouseUp(wxMouseEvent &event)
{
if ( m_rubberBand )
{
{
wxClientDC dc( this );
PrepareDC( dc );
wxDCOverlay overlaydc( m_overlay, &dc );
overlaydc.Clear();
}
m_overlay.Reset();
m_rubberBand = false;
int x,y,xx,yy ;
event.GetPosition(&x,&y);
CalcUnscrolledPosition( x, y, &xx, &yy );
wxString str;
str.Printf( wxT("Rectangle selection from %d,%d to %d,%d"),
m_anchorpoint.x, m_anchorpoint.y , (int)xx, (int)yy );
wxMessageBox( str , wxT("Rubber-Banding") );
}
}
// ----------------------------------------------------------------------------
// MyFrame
// ----------------------------------------------------------------------------