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