+/////////////////////////////////////////////////////////////////////////////
+// Name: canvas.cpp
+// Author: Robert Roebling
+// Created: XX/XX/XX
+// Copyright: 2000 (c) Robert Roebling
+// Licence: wxWindows Licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+ #pragma implementation "canvas.cpp"
+#endif
+
+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#include "wx/canvas/canvas.h"
+
+#ifdef __WXGTK__
+ #include <gtk/gtk.h>
+ #include <gdk/gdkrgb.h>
+ #include "wx/gtk/win_gtk.h"
+#endif
+
+// WDR: class implementations
+
+//----------------------------------------------------------------------------
+// wxCanvasObject
+//----------------------------------------------------------------------------
+
+wxCanvasObject::wxCanvasObject( int x, int y, int width, int height )
+{
+ m_owner = NULL;
+ m_area.x = x;
+ m_area.y = y;
+ m_area.width = width;
+ m_area.height = height;
+ m_isControl = FALSE;
+ m_isVector = FALSE;
+ m_isImage = FALSE;
+}
+
+void wxCanvasObject::Move( int x, int y )
+{
+ int old_x = m_area.x;
+ int old_y = m_area.y;
+
+ m_area.x = x;
+ m_area.y = y;
+
+ if (!m_isControl)
+ {
+ // TODO: sometimes faster to merge into 1 Update or
+ // to break up into four
+ m_owner->Update( old_x, old_y, m_area.width, m_area.height );
+ m_owner->Update( x, y, m_area.width, m_area.height );
+ }
+}
+
+void wxCanvasObject::WriteSVG( wxTextOutputStream &stream )
+{
+}
+
+void wxCanvasObject::Render( int clip_x, int clip_y, int clip_width, int clip_height )
+{
+}
+
+//----------------------------------------------------------------------------
+// wxCanvasImage
+//----------------------------------------------------------------------------
+
+wxCanvasImage::wxCanvasImage( const wxImage &image, int x, int y )
+ : wxCanvasObject( x, y, image.GetWidth(), image.GetHeight() )
+{
+ m_image = image;
+ m_isImage = TRUE;
+}
+
+void wxCanvasImage::Render( int clip_x, int clip_y, int clip_width, int clip_height )
+{
+ m_owner->GetBuffer()->Paste( m_image, m_area.x, m_area.y );
+}
+
+void wxCanvasImage::WriteSVG( wxTextOutputStream &stream )
+{
+ // no idea
+}
+
+//----------------------------------------------------------------------------
+// wxCanvas
+//----------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxCanvas,wxScrolledWindow)
+
+BEGIN_EVENT_TABLE(wxCanvas,wxScrolledWindow)
+ EVT_CHAR( wxCanvas::OnChar )
+ EVT_PAINT( wxCanvas::OnPaint )
+ EVT_SIZE( wxCanvas::OnSize )
+ EVT_IDLE( wxCanvas::OnIdle )
+ EVT_MOUSE_EVENTS( wxCanvas::OnMouse )
+ EVT_SET_FOCUS( wxCanvas::OnSetFocus )
+ EVT_KILL_FOCUS( wxCanvas::OnKillFocus )
+END_EVENT_TABLE()
+
+wxCanvas::wxCanvas( wxWindow *parent, wxWindowID id,
+ const wxPoint &position, const wxSize& size, long style ) :
+ wxScrolledWindow( parent, id, position, size, style )
+{
+ m_needUpdate = FALSE;
+ m_objects.DeleteContents( TRUE );
+}
+
+wxCanvas::~wxCanvas()
+{
+ wxNode *node = m_updateRects.First();
+ while (node)
+ {
+ wxRect *rect = (wxRect*) node->Data();
+ delete rect;
+ m_updateRects.DeleteNode( node );
+ node = m_updateRects.First();
+ }
+}
+
+void wxCanvas::SetArea( int width, int height )
+{
+ m_buffer = wxImage( width, height );
+ SetScrollbars( 10, 10, width/10, height/10 );
+}
+
+void wxCanvas::Update( int x, int y, int width, int height )
+{
+ m_needUpdate = TRUE;
+
+ m_updateRects.Append(
+ (wxObject*) new wxRect( x,y,width,height ) );
+
+ // speed up with direct access
+ int xx,yy,ww,hh;
+ for (yy = y; yy < y+height; yy++)
+ for (xx = x; xx < x+width; xx++)
+ m_buffer.SetRGB( xx, yy, 0, 0, 0 );
+
+ wxNode *node = m_objects.First();
+ while (node)
+ {
+ wxCanvasObject *obj = (wxCanvasObject*) node->Data();
+ xx = obj->GetX();
+ yy = obj->GetY();
+ ww = obj->GetWidth();
+ hh = obj->GetHeight();
+
+ // if intersect
+ {
+ obj->Render( x, y, width, height );
+ }
+
+ node = node->Next();
+ }
+}
+
+void wxCanvas::UpdateNow()
+{
+ if (!m_needUpdate) return;
+
+ wxClientDC dc( this );
+ PrepareDC( dc );
+
+ wxNode *node = m_updateRects.First();
+ while (node)
+ {
+ wxRect *rect = (wxRect*) node->Data();
+ wxImage sub_image( m_buffer.GetSubImage( *rect ) );
+
+ // DirectDraw here, please
+
+#ifdef __WXGTK__
+ int bpp = wxDisplayDepth();
+ if (bpp > 8)
+ {
+ // the init code is doubled in wxImage
+ static bool s_hasInitialized = FALSE;
+
+ if (!s_hasInitialized)
+ {
+ gdk_rgb_init();
+ s_hasInitialized = TRUE;
+ }
+
+ int x = rect->x;
+ int y = rect->y;
+ CalcScrolledPosition( x, y, &x, &y );
+
+ gdk_draw_rgb_image( GTK_PIZZA(m_wxwindow)->bin_window,
+ m_wxwindow->style->black_gc,
+ x, y,
+ sub_image.GetWidth(), sub_image.GetHeight(),
+ GDK_RGB_DITHER_NONE,
+ sub_image.GetData(),
+ sub_image.GetWidth()*3 );
+ }
+ else
+ {
+ wxBitmap bitmap( sub_image.ConvertToBitmap() );
+ dc.DrawBitmap( bitmap, rect->x, rect->y );
+ }
+#endif
+
+#ifndef __WXGTK__
+ wxBitmap bitmap( sub_image.ConvertToBitmap() );
+ dc.DrawBitmap( bitmap, rect->x, rect->y );
+#endif
+
+ delete rect;
+ m_updateRects.DeleteNode( node );
+ node = m_updateRects.First();
+ }
+}
+
+void wxCanvas::Prepend( wxCanvasObject* obj )
+{
+ m_objects.Insert( obj );
+
+ obj->SetOwner( this );
+
+ if (!obj->IsControl())
+ Update( obj->GetX(), obj->GetY(), obj->GetWidth(), obj->GetHeight() );
+}
+
+void wxCanvas::Append( wxCanvasObject* obj )
+{
+ m_objects.Append( obj );
+
+ obj->SetOwner( this );
+
+ if (!obj->IsControl())
+ Update( obj->GetX(), obj->GetY(), obj->GetWidth(), obj->GetHeight() );
+}
+
+void wxCanvas::Insert( size_t before, wxCanvasObject* obj )
+{
+ m_objects.Insert( before, obj );
+
+ obj->SetOwner( this );
+
+ if (!obj->IsControl())
+ Update( obj->GetX(), obj->GetY(), obj->GetWidth(), obj->GetHeight() );
+}
+
+void wxCanvas::Remove( wxCanvasObject* obj )
+{
+ int x = obj->GetX();
+ int y = obj->GetY();
+ int w = obj->GetWidth();
+ int h = obj->GetHeight();
+ bool ic = obj->IsControl();
+
+ m_objects.DeleteObject( obj );
+
+ if (!ic)
+ Update( x, y, w, h );
+}
+
+void wxCanvas::OnPaint(wxPaintEvent &event)
+{
+#ifdef __WXMSW__
+ wxPaintDC dc(this);
+#endif
+
+ m_needUpdate = TRUE;
+
+ wxRegionIterator it( GetUpdateRegion() );
+ while (it)
+ {
+ int x = it.GetX();
+ int y = it.GetY();
+ CalcUnscrolledPosition( x, y, &x, &y );
+
+ int w = it.GetWidth();
+ int h = it.GetHeight();
+ if (x + w > m_buffer.GetWidth())
+ w = m_buffer.GetWidth()-x;
+ if (y + h > m_buffer.GetHeight())
+ h = m_buffer.GetHeight()-y;
+
+ m_updateRects.Append( (wxObject*) new wxRect( x, y, w, h ) );
+
+ it++;
+ }
+}
+
+void wxCanvas::OnMouse(wxMouseEvent &event)
+{
+ // Propagate to objects here
+}
+
+void wxCanvas::OnSize(wxSizeEvent &event)
+{
+ event.Skip();
+}
+
+void wxCanvas::OnIdle(wxIdleEvent &event)
+{
+ UpdateNow();
+ event.Skip();
+}
+
+void wxCanvas::OnSetFocus(wxFocusEvent &event)
+{
+}
+
+void wxCanvas::OnKillFocus(wxFocusEvent &event)
+{
+}
+
+void wxCanvas::OnChar(wxKeyEvent &event)
+{
+ event.Skip();
+}
+
+
projects / wxWidgets.git / commitdiff
