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Added wxCanvasLine, Freeze() and Thaw() and mouse events (untested)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8241 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2000-09-02 18:01:32 +00:00
parent 3e1c4e0021
commit 239c1f50b0
3 changed files with 294 additions and 41 deletions
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196
contrib/src/canvas/canvas.cpp
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@@ -72,6 +72,14 @@ void wxCanvasObject::Move( int x, int y )
}
}
bool wxCanvasObject::IsHit( int x, int y, int margin )
{
return ((x >= m_area.x-margin) &&
(x <= m_area.x+m_area.width+margin) &&
(y >= m_area.y-margin) &&
(y <= m_area.y+m_area.height+margin));
}
void wxCanvasObject::WriteSVG( wxTextOutputStream &stream )
{
}
@@ -105,6 +113,93 @@ void wxCanvasRect::WriteSVG( wxTextOutputStream &stream )
{
}
//----------------------------------------------------------------------------
// wxCanvasLine
//----------------------------------------------------------------------------
wxCanvasLine::wxCanvasLine( int x, int y, int w, int h, unsigned char red, unsigned char green, unsigned char blue )
: wxCanvasObject( x, y, w, h )
{
m_red = red;
m_green = green;
m_blue = blue;
}
void wxCanvasLine::Render( int clip_x, int clip_y, int clip_width, int clip_height )
{
wxImage *image = m_owner->GetBuffer();
if ((m_area.width == 0) && (m_area.height == 0))
{
image->SetRGB( m_area.x, m_area.y, m_red, m_green, m_blue );
}
else
{
int x1 = m_area.x;
int y1 = m_area.y;
int x2 = m_area.x+m_area.width;
int y2 = m_area.y+m_area.height;
wxInt32 d, ii, jj, di, ai, si, dj, aj, sj;
di = x1 - x2;
ai = abs(di) << 1;
si = (di < 0)? -1 : 1;
dj = y1 - y2;
aj = abs(dj) << 1;
sj = (dj < 0)? -1 : 1;
ii = x2;
jj = y2;
if (ai > aj)
{
// iterate over i
d = aj - (ai >> 1);
while (ii != x1)
{
if ((ii >= clip_x) && (ii <= clip_x+clip_width) &&
(jj >= clip_y) && (jj <= clip_y+clip_height))
{
image->SetRGB( ii, jj, m_red, m_blue, m_green );
}
if (d >= 0)
{
jj += sj;
d -= ai;
}
ii += si;
d += aj;
}
}
else
{
// iterate over j
d = ai - (aj >> 1);
while (jj != y1)
{
if ((ii >= clip_x) && (ii <= clip_x+clip_width) &&
(jj >= clip_y) && (jj <= clip_y+clip_height))
{
image->SetRGB( ii, jj, m_red, m_blue, m_green );
}
if (d >= 0)
{
ii += si;
d -= aj;
}
jj += sj;
d += ai;
}
}
}
}
void wxCanvasLine::WriteSVG( wxTextOutputStream &stream )
{
}
//----------------------------------------------------------------------------
// wxCanvasImage
//----------------------------------------------------------------------------
@@ -349,6 +444,8 @@ wxCanvas::wxCanvas( wxWindow *parent, wxWindowID id,
m_red = 0;
m_green = 0;
m_blue = 0;
m_lastMouse = (wxCanvasObject*)NULL;
m_frozen = FALSE;
}
wxCanvas::~wxCanvas()
@@ -375,6 +472,8 @@ void wxCanvas::SetColour( unsigned char red, unsigned char green, unsigned char
m_green = green;
m_blue = blue;
if (m_frozen) return;
unsigned char *data = m_buffer.GetData();
for (int y = 0; y < m_buffer.GetHeight(); y++)
@@ -389,8 +488,31 @@ void wxCanvas::SetColour( unsigned char red, unsigned char green, unsigned char
}
}
void wxCanvas::Freeze()
{
m_frozen = TRUE;
}
void wxCanvas::Thaw()
{
wxNode *node = m_updateRects.First();
while (node)
{
wxRect *rect = (wxRect*) node->Data();
delete rect;
m_updateRects.DeleteNode( node );
node = m_updateRects.First();
}
m_frozen = FALSE;
Update( 0, 0, m_buffer.GetWidth(), m_buffer.GetHeight() );
}
void wxCanvas::Update( int x, int y, int width, int height )
{
if (m_frozen) return;
// clip to buffer
if (x < 0)
{
@@ -620,7 +742,79 @@ void wxCanvas::OnPaint(wxPaintEvent &event)
void wxCanvas::OnMouse(wxMouseEvent &event)
{
// Propagate to objects here
// should we implement mouse capture ?
int x = event.GetX();
int y = event.GetY();
CalcUnscrolledPosition( x, y, &x, &y );
if (event.GetEventType() == wxEVT_MOTION)
{
wxNode *node = m_objects.First();
while (node)
{
wxCanvasObject *obj = (wxCanvasObject*) node->Data();
if (!obj->IsControl())
{
if (obj->IsHit(x,y))
{
wxMouseEvent child_event( wxEVT_MOTION );
child_event.SetEventObject( obj );
child_event.m_x = x + obj->GetX();
child_event.m_y = y + obj->GetY();
child_event.m_leftDown = event.m_leftDown;
child_event.m_rightDown = event.m_rightDown;
child_event.m_middleDown = event.m_middleDown;
child_event.m_controlDown = event.m_controlDown;
child_event.m_shiftDown = event.m_shiftDown;
child_event.m_altDown = event.m_altDown;
child_event.m_metaDown = event.m_metaDown;
if ((obj != m_lastMouse) && (m_lastMouse != NULL))
{
child_event.SetEventType( wxEVT_LEAVE_WINDOW );
child_event.SetEventObject( m_lastMouse );
child_event.m_x = x + m_lastMouse->GetX();
child_event.m_y = y + m_lastMouse->GetY();
m_lastMouse->ProcessEvent( child_event );
m_lastMouse = obj;
child_event.SetEventType( wxEVT_ENTER_WINDOW );
child_event.SetEventObject( m_lastMouse );
child_event.m_x = x + m_lastMouse->GetX();
child_event.m_y = y + m_lastMouse->GetY();
m_lastMouse->ProcessEvent( child_event );
child_event.SetEventType( wxEVT_MOTION );
child_event.SetEventObject( obj );
}
obj->ProcessEvent( child_event );
return;
}
}
node = node->Next();
}
if (m_lastMouse)
{
wxMouseEvent child_event( wxEVT_LEAVE_WINDOW );
child_event.SetEventObject( m_lastMouse );
child_event.m_x = x + m_lastMouse->GetX();
child_event.m_y = y + m_lastMouse->GetY();
child_event.m_leftDown = event.m_leftDown;
child_event.m_rightDown = event.m_rightDown;
child_event.m_middleDown = event.m_middleDown;
child_event.m_controlDown = event.m_controlDown;
child_event.m_shiftDown = event.m_shiftDown;
child_event.m_altDown = event.m_altDown;
child_event.m_metaDown = event.m_metaDown;
m_lastMouse->ProcessEvent( child_event );
m_lastMouse = (wxCanvasObject*) NULL;
return;
}
}
event.Skip();
}
void wxCanvas::OnSize(wxSizeEvent &event)