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capturing the mouse in wxCanvasObject

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8265 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Kevin Hock
2000-09-05 20:07:57 +00:00
parent 21156596eb
commit dc16900b10
2 changed files with 186 additions and 148 deletions
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16
contrib/include/wx/canvas/canvas.h
View File

@@ -54,8 +54,8 @@ public:
// Later... // Later...
virtual void WriteSVG( wxTextOutputStream &stream ); virtual void WriteSVG( wxTextOutputStream &stream );
wxCanvas *GetOwner() { return m_owner; } wxCanvas *GetOwner() { return m_owner; }
void SetOwner( wxCanvas *owner ) { m_owner = owner; } void SetOwner( wxCanvas *owner ) { m_owner = owner; }
bool IsControl() { return m_isControl; } bool IsControl() { return m_isControl; }
bool IsVector() { return m_isVector; } bool IsVector() { return m_isVector; }
@@ -65,6 +65,10 @@ public:
inline int GetWidth() { return m_area.width; } inline int GetWidth() { return m_area.width; }
inline int GetHeight() { return m_area.height; } inline int GetHeight() { return m_area.height; }
void CaptureMouse();
void ReleaseMouse();
bool IsCapturedMouse();
protected: protected:
wxCanvas *m_owner; wxCanvas *m_owner;
bool m_isControl; bool m_isControl;
@@ -108,7 +112,7 @@ private:
class wxCanvasLine: public wxCanvasObject class wxCanvasLine: public wxCanvasObject
{ {
public: public:
wxCanvasLine( double x1, double y1, double x1, double y1, wxCanvasLine( double x1, double y1, double x2, double y2,
unsigned char red, unsigned char green, unsigned char blue ); unsigned char red, unsigned char green, unsigned char blue );
virtual void Recreate(); virtual void Recreate();
@@ -238,15 +242,15 @@ public:
// ... and call this to tell all objets to recreate then // ... and call this to tell all objets to recreate then
virtual void Recreate(); virtual void Recreate();
void CaptureMouse( wxCanvasObject *obj );
void ReleaseMouse();
wxImage *GetBuffer() { return &m_buffer; } wxImage *GetBuffer() { return &m_buffer; }
bool NeedUpdate() { return m_needUpdate; } bool NeedUpdate() { return m_needUpdate; }
bool IsFrozen() { return m_frozen; } bool IsFrozen() { return m_frozen; }
void BlitBuffer( wxDC &dc ); void BlitBuffer( wxDC &dc );
void SetCaptureMouse( wxCanvasObject *obj );
private: private:
wxImage m_buffer; wxImage m_buffer;
bool m_needUpdate; bool m_needUpdate;

128
contrib/src/canvas/canvas.cpp
View File

@@ -98,6 +98,22 @@ bool wxCanvasObject::IsHit( int x, int y, int margin )
(y <= m_area.y+m_area.height+margin)); (y <= m_area.y+m_area.height+margin));
} }
void wxCanvasObject::CaptureMouse()
{
m_owner->SetCaptureMouse( this );
}
void wxCanvasObject::ReleaseMouse()
{
m_owner->SetCaptureMouse( NULL );
}
bool wxCanvasObject::IsCapturedMouse()
{
return m_owner->m_captureMouse==this;
}
void wxCanvasObject::Render( int clip_x, int clip_y, int clip_width, int clip_height ) void wxCanvasObject::Render( int clip_x, int clip_y, int clip_width, int clip_height )
{ {
} }
@@ -579,16 +595,18 @@ void wxCanvas::SetColour( unsigned char red, unsigned char green, unsigned char
} }
} }
void wxCanvas::CaptureMouse( wxCanvasObject *obj ) void wxCanvas::SetCaptureMouse( wxCanvasObject *obj )
{ {
wxWindow::CaptureMouse(); if (obj)
m_captureMouse = obj; {
} wxWindow::CaptureMouse();
m_captureMouse = obj;
void wxCanvas::ReleaseMouse() }
{ else
m_captureMouse = (wxCanvasObject*) NULL; {
wxWindow::ReleaseMouse(); wxWindow::ReleaseMouse();
m_captureMouse = NULL;
}
} }
void wxCanvas::Freeze() void wxCanvas::Freeze()
@@ -881,58 +899,74 @@ void wxCanvas::OnPaint(wxPaintEvent &event)
void wxCanvas::OnMouse(wxMouseEvent &event) void wxCanvas::OnMouse(wxMouseEvent &event)
{ {
// should we implement mouse capture ?
int x = event.GetX(); int x = event.GetX();
int y = event.GetY(); int y = event.GetY();
CalcUnscrolledPosition( x, y, &x, &y ); CalcUnscrolledPosition( x, y, &x, &y );
if (event.GetEventType() == wxEVT_MOTION) if (event.GetEventType() == wxEVT_MOTION)
{ {
wxNode *node = m_objects.Last(); if (m_captureMouse) //no matter what go to this one
while (node)
{ {
wxCanvasObject *obj = (wxCanvasObject*) node->Data(); wxMouseEvent child_event( wxEVT_MOTION );
child_event.SetEventObject(m_captureMouse);
if (!obj->IsControl()) child_event.m_x = x - m_captureMouse->GetX();
child_event.m_y = y - m_captureMouse->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_captureMouse->ProcessEvent( child_event );
}
else
{
wxNode *node = m_objects.Last();
while (node)
{ {
if (obj->IsHit(x,y)) wxCanvasObject *obj = (wxCanvasObject*) node->Data();
if (!obj->IsControl())
{ {
wxMouseEvent child_event( wxEVT_MOTION ); if (obj->IsHit(x,y))
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 ); wxMouseEvent child_event( wxEVT_MOTION );
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 ); 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;
} }
obj->ProcessEvent( child_event );
return;
} }
node = node->Previous();
} }
node = node->Previous();
} }
if (m_lastMouse) if (m_lastMouse)
{ {