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/*
Copyright (C) 2002-2009 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "port_matrix_component.h"
#include "port_matrix.h"
#include "port_matrix_body.h"
/** Constructor.
* @param p Port matrix that we're in.
*/
PortMatrixComponent::PortMatrixComponent (PortMatrix* m, PortMatrixBody* b)
: _matrix (m),
_body (b),
_pixmap (0),
_render_required (true),
_dimension_computation_required (true)
{
}
/** Destructor */
PortMatrixComponent::~PortMatrixComponent ()
{
if (_pixmap) {
gdk_pixmap_unref (_pixmap);
}
}
void
PortMatrixComponent::setup ()
{
_dimension_computation_required = true;
_render_required = true;
}
GdkPixmap *
PortMatrixComponent::get_pixmap (GdkDrawable *drawable)
{
if (_render_required) {
if (_dimension_computation_required) {
compute_dimensions ();
_dimension_computation_required = false;
_body->component_size_changed ();
}
/* we may be zero width or height; if so, just
use the smallest allowable pixmap */
if (_width == 0) {
_width = 1;
}
if (_height == 0) {
_height = 1;
}
/* make a pixmap of the right size */
if (_pixmap) {
gdk_pixmap_unref (_pixmap);
}
_pixmap = gdk_pixmap_new (drawable, _width, _height, -1);
/* render */
cairo_t* cr = gdk_cairo_create (_pixmap);
render (cr);
cairo_destroy (cr);
_render_required = false;
}
return _pixmap;
}
void
PortMatrixComponent::set_source_rgb (cairo_t *cr, Gdk::Color const & c)
{
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
void
PortMatrixComponent::set_source_rgba (cairo_t *cr, Gdk::Color const & c, double a)
{
cairo_set_source_rgba (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p(), a);
}
std::pair<uint32_t, uint32_t>
PortMatrixComponent::dimensions ()
{
if (_dimension_computation_required) {
compute_dimensions ();
_dimension_computation_required = false;
_body->component_size_changed ();
}
return std::make_pair (_width, _height);
}
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