bool Format7DrawingArea::on_button_release_event( GdkEventButton* event )
{
gdouble endX = event->x;
gdouble endY = event->y;
ClipPoint( &endX, &endY );
const unsigned int endXOrig = ToOriginal( (float)endX );
const unsigned int endYOrig = ToOriginal( (float)endY );
switch ( event->button )
{
case 1:
m_left = std::min<unsigned int>(m_startX, endXOrig);
m_top = std::min<unsigned int>(m_startY, endYOrig);
m_width = std::max<unsigned int>(m_startX, endXOrig) - m_left;
m_height = std::max<unsigned int>(m_startY, endYOrig) - m_top;
ClampAllValues();
m_imageSizeChanged = true;
m_leftMBHeld = false;
break;
case 3:
get_window()->set_cursor();
m_rightMBHeld = false;
break;
}
queue_draw();
m_signal_image_size_changed( m_left, m_top, m_width, m_height, true);
return true;
}
bool Format7DrawingArea::on_expose_event( GdkEventExpose* event )
{
Glib::RefPtr<Gdk::Window> window = get_window();
if( window == NULL)
{
return true;
}
Cairo::RefPtr<Cairo::Context> refCairo = window->create_cairo_context();
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
refCairo->rectangle(
event->area.x,
event->area.y,
event->area.width,
event->area.height);
refCairo->clip();
// Get width / height of widget
int width;
int height;
window->get_size( width, height );
// Figure out which scale to use (horizontal or vertical)
const float horzScale = m_maxWidth / (float)width;
const float vertScale = m_maxHeight / (float)height;
m_previewScale = (horzScale < vertScale) ? vertScale : horzScale;
Gtk::AspectFrame* pFrame = (Gtk::AspectFrame*)get_parent();
float fRatio = m_maxWidth / (float)m_maxHeight;
if ( fRatio != pFrame->property_ratio())
{
pFrame->set( 0.0, 0.0, fRatio, false );
}
unsigned int scaledLeft = static_cast<unsigned int>(ToScaled( m_left ));
unsigned int scaledTop = static_cast<unsigned int>(ToScaled( m_top ));
unsigned int scaledWidth = static_cast<unsigned int>(ToScaled( m_width ));
unsigned int scaledHeight = static_cast<unsigned int>(ToScaled( m_height ));
// Fill the background with the PGR color
FillBackground(
refCairo,
event->area.x,
event->area.y,
event->area.width,
event->area.height);
// Draw the data on top of the filled background
DrawRectangle( refCairo, scaledLeft, scaledTop, scaledWidth, scaledHeight );
DrawDashedLines( refCairo, scaledLeft, scaledTop, scaledWidth, scaledHeight );
DrawImageDimensionsText( refCairo, m_left, m_top, m_width, m_height );
DrawCurrentCursorPositionText( refCairo, m_currX, m_currY );
if ( m_imageSizeChanged == true )
{
if ( m_left != m_lastFiredLeft ||
m_top != m_lastFiredTop ||
m_width != m_lastFiredWidth ||
m_height != m_lastFiredHeight )
{
m_signal_image_size_changed( m_left, m_top, m_width, m_height );
m_lastFiredLeft = m_left;
m_lastFiredTop = m_top;
m_lastFiredWidth = m_width;
m_lastFiredHeight = m_height;
}
m_imageSizeChanged = false;
}
return true;
}
