839 lines
20 KiB
C++
839 lines
20 KiB
C++
/* This file is part of FlowCanvas.
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* Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
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*
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* FlowCanvas is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* FlowCanvas is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <algorithm>
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#include <cassert>
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#include <cmath>
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#include <cstdlib>
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#include <functional>
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#include <list>
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#include <string>
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#include "Canvas.hpp"
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#include "Item.hpp"
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#include "Module.hpp"
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using std::list;
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using std::string;
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namespace FlowCanvas {
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static const uint32_t MODULE_FILL_COLOUR = 0x1E2224FF;
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static const uint32_t MODULE_HILITE_FILL_COLOUR = 0x2E3436FF;
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static const uint32_t MODULE_OUTLINE_COLOUR = 0x93978FFF;
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static const uint32_t MODULE_HILITE_OUTLINE_COLOUR = 0xEEEEECFF;
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static const uint32_t MODULE_TITLE_COLOUR = 0xFFFFFFFF;
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static const double MODULE_EMPTY_PORT_BREADTH = 12.0;
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static const double MODULE_EMPTY_PORT_DEPTH = 6.0;
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/** Construct a Module
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*
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* Note you must call resize() at some point or the module will look ridiculous.
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* This it to avoid unecessary text measuring and resizing, which is insanely
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* expensive.
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*
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* If @a name is the empty string, the space where the title would usually be
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* is not created (eg the module will be shorter).
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*/
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Module::Module(
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boost::shared_ptr<Canvas> canvas,
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const string& name,
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double x, double y,
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bool show_title, bool show_port_labels)
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: Item(canvas, name, x, y, MODULE_FILL_COLOUR)
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, _module_box(*this, 0, 0, 0, 0) // w, h set later
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, _canvas_title(*this, 0, 8, name) // x set later
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, _stacked_border(NULL)
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, _icon_box(NULL)
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, _embed_container(NULL)
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, _embed_item(NULL)
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, _border_width(1.0)
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, _embed_width(0)
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, _embed_height(0)
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, _icon_size(16)
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, _widest_input(0)
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, _widest_output(0)
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, _title_width(0.0)
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, _title_height(0.0)
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, _title_visible(show_title)
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, _port_renamed(false)
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, _show_port_labels(show_port_labels)
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{
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_module_box.property_fill_color_rgba() = MODULE_FILL_COLOUR;
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_module_box.property_outline_color_rgba() = MODULE_OUTLINE_COLOUR;
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_module_box.property_width_units() = _border_width;
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_border_color = MODULE_OUTLINE_COLOUR;
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if (show_title) {
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/* WARNING: Doing this makes things extremely slow!
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_canvas_title.property_size_set() = true;
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_canvas_title.property_size() = 9000;
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_canvas_title.property_weight_set() = true;
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_canvas_title.property_weight() = 400; */
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//if (canvas->get_zoom() != 1.0)
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zoom(canvas->get_zoom());
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_canvas_title.property_fill_color_rgba() = MODULE_TITLE_COLOUR;
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_title_width = _canvas_title.property_text_width();
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_title_height = _canvas_title.property_text_height();
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} else {
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_canvas_title.hide();
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}
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set_width(10.0);
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set_height(10.0);
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}
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Module::~Module()
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{
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delete _stacked_border;
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delete _icon_box;
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}
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bool
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Module::on_event(GdkEvent* event)
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{
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boost::shared_ptr<Canvas> canvas;
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switch (event->type) {
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case GDK_KEY_PRESS:
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case GDK_KEY_RELEASE:
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if ((canvas = _canvas.lock()))
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canvas->canvas_event(event);
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break;
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case GDK_ENTER_NOTIFY:
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set_highlighted(true);
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break;
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case GDK_LEAVE_NOTIFY:
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set_highlighted(false);
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default: break;
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}
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bool ret = Item::on_event(event);
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if (event->type == GDK_ENTER_NOTIFY)
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for (PortVector::iterator p = _ports.begin(); p != _ports.end(); ++p)
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(*p)->raise_connections();
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return ret;
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}
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double
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Module::empty_port_breadth() const
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{
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return MODULE_EMPTY_PORT_BREADTH;
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}
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double
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Module::empty_port_depth() const
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{
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return MODULE_EMPTY_PORT_DEPTH;
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}
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/** Set the border width of the module.
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*
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* Do NOT directly set the width_units property on the rect, use this function.
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*/
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void
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Module::set_border_width(double w)
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{
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_border_width = w;
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_module_box.property_width_units() = w;
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if (_stacked_border)
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_stacked_border->property_width_units() = w;
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}
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void
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Module::set_stacked_border(bool b)
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{
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if (b && !_stacked_border) {
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_stacked_border = new Gnome::Canvas::Rect(*this, 4.0, 4.0, _width + 4.0, _height + 4.0);
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_stacked_border->property_fill_color_rgba() = _color;
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_stacked_border->property_outline_color_rgba() = MODULE_OUTLINE_COLOUR;
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_stacked_border->property_width_units() = _border_width;
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_stacked_border->lower_to_bottom();
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_stacked_border->show();
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} else if (b) {
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_stacked_border->show();
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} else {
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delete _stacked_border;
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_stacked_border = NULL;
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}
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}
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void
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Module::set_icon(const Glib::RefPtr<Gdk::Pixbuf>& icon)
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{
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if (_icon_box) {
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delete _icon_box;
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_icon_box = 0;
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}
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if (icon) {
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_icon_box = new Gnome::Canvas::Pixbuf(*this, 8, 10, icon);
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double scale = _icon_size / (icon->get_width() > icon->get_height() ?
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icon->get_width() : icon->get_height());
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_icon_box->affine_relative(Gnome::Art::AffineTrans::scaling(scale));
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_icon_box->show();
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}
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resize();
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}
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void
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Module::zoom(double z)
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{
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_canvas_title.property_size() = static_cast<int>(floor(9000.0f * z));
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for (PortVector::iterator p = _ports.begin(); p != _ports.end(); ++p)
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(*p)->zoom(z);
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}
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void
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Module::set_highlighted(bool b)
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{
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if (b) {
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_module_box.property_fill_color_rgba() = MODULE_HILITE_FILL_COLOUR;
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_module_box.property_outline_color_rgba() = MODULE_HILITE_OUTLINE_COLOUR;
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} else {
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_module_box.property_fill_color_rgba() = _color;
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_module_box.property_outline_color_rgba() = MODULE_OUTLINE_COLOUR;
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}
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}
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void
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Module::set_selected(bool selected)
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{
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Item::set_selected(selected);
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assert(_selected == selected);
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boost::shared_ptr<Canvas> canvas = _canvas.lock();
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if (!canvas)
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return;
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if (selected) {
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_module_box.property_outline_color_rgba() = MODULE_HILITE_OUTLINE_COLOUR;
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_module_box.property_dash() = canvas->select_dash();
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} else {
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_module_box.property_fill_color_rgba() = _color;
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_module_box.property_outline_color_rgba() = MODULE_OUTLINE_COLOUR;
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_module_box.property_dash() = NULL;
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}
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}
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/** Get the port on this module at world coordinate @a x @a y.
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*/
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boost::shared_ptr<Port>
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Module::port_at(double x, double y)
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{
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x -= property_x();
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y -= property_y();
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for (PortVector::iterator p = _ports.begin(); p != _ports.end(); ++p) {
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boost::shared_ptr<Port> port = *p;
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if (x > port->property_x() && x < port->property_x() + port->width()
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&& y > port->property_y() && y < port->property_y() + port->height()) {
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return port;
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}
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}
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return boost::shared_ptr<Port>();
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}
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void
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Module::remove_port(boost::shared_ptr<Port> port)
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{
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PortVector::iterator i = std::find(_ports.begin(), _ports.end(), port);
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if (i != _ports.end()) {
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_ports.erase(i);
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// Find new widest input or output, if necessary
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if (port->is_input() && port->width() >= _widest_input) {
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_widest_input = 0;
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for (PortVector::iterator i = _ports.begin(); i != _ports.end(); ++i) {
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const boost::shared_ptr<Port> p = (*i);
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if (p->is_input() && p->width() >= _widest_input)
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_widest_input = p->width();
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}
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} else if (port->is_output() && port->width() >= _widest_output) {
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_widest_output = 0;
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for (PortVector::iterator i = _ports.begin(); i != _ports.end(); ++i) {
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const boost::shared_ptr<Port> p = (*i);
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if (p->is_output() && p->width() >= _widest_output)
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_widest_output = p->width();
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}
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}
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resize();
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port->hide();
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port.reset();
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} else {
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std::cerr << "Unable to find port " << port->name() << " to remove." << std::endl;
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}
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}
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void
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Module::set_width(double w)
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{
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const bool growing = (w > _width);
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_width = w;
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_module_box.property_x2() = _module_box.property_x1() + w;
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if (_stacked_border)
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_stacked_border->property_x2() = _stacked_border->property_x1() + w;
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if (growing)
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fit_canvas();
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}
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void
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Module::set_height(double h)
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{
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const bool growing = (h > _height);
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_height = h;
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_module_box.property_y2() = _module_box.property_y1() + h;
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if (_stacked_border)
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_stacked_border->property_y2() = _stacked_border->property_y1() + h;
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if (growing)
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fit_canvas();
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}
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/** Move relative to current location.
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*
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* @param dx distance to move along x axis (in world units)
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* @param dy distance to move along y axis (in world units)
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*/
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void
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Module::move(double dx, double dy)
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{
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boost::shared_ptr<Canvas> canvas = _canvas.lock();
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if (!canvas)
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return;
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double new_x = property_x() + dx;
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double new_y = property_y() + dy;
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if (new_x < 0)
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dx = property_x() * -1;
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else if (new_x + _width > canvas->width())
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dx = canvas->width() - property_x() - _width;
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if (new_y < 0)
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dy = property_y() * -1;
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else if (new_y + _height > canvas->height())
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dy = canvas->height() - property_y() - _height;
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Gnome::Canvas::Group::move(dx, dy);
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// Deal with moving the connection lines
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for (PortVector::iterator p = _ports.begin(); p != _ports.end(); ++p)
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(*p)->move_connections();
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}
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/** Move to the specified absolute coordinate on the canvas.
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*
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* @param x x coordinate to move to (in world units)
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* @param y y coordinate to move to (in world units)
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*/
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void
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Module::move_to(double x, double y)
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{
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boost::shared_ptr<Canvas> canvas = _canvas.lock();
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if (!canvas)
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return;
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assert(canvas->width() > 0);
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assert(canvas->height() > 0);
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if (x < 0) x = 0;
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if (y < 0) y = 0;
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if (x + _width > canvas->width()) x = canvas->width() - _width - 1;
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if (y + _height > canvas->height()) y = canvas->height() - _height - 1;
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assert(x >= 0);
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assert(y >= 0);
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if (x + _width >= canvas->width() || y + _height >= canvas->height()) {
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double x1, y1, x2, y2;
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canvas->get_scroll_region(x1, y1, x2, y2);
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canvas->set_scroll_region(x1, y1, std::max(x2, x + _width), std::max(y2, y + _height));
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}
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property_x() = x;
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property_y() = y;
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// Actually move (stupid gnomecanvas)
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move(0, 0);
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// Update any connection line positions
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for (PortVector::iterator p = _ports.begin(); p != _ports.end(); ++p)
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(*p)->move_connections();
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}
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void
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Module::set_name(const string& n)
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{
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if (_name != n) {
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string old_name = _name;
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_name = n;
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_canvas_title.property_text() = _name;
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_title_width = _canvas_title.property_text_width();
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_title_height = _canvas_title.property_text_height();
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if (_title_visible)
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resize();
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}
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}
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/** Add a port to this module.
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*
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* A reference to p is held until remove_port is called to remove it. Note
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* that the module will not be resized (for performance reasons when adding
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* many ports in succession), so you must explicitly call resize() after this
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* for the module to look at all sensible.
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*/
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void
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Module::add_port(boost::shared_ptr<Port> p)
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{
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PortVector::const_iterator i = std::find(_ports.begin(), _ports.end(), p);
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if (i != _ports.end()) // already added
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return; // so do nothing
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if (p->is_input() && p->natural_width() > _widest_input)
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_widest_input = p->width();
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else if (p->is_output() && p->natural_width() > _widest_output)
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_widest_output = p->width();
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_ports.push_back(p);
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boost::shared_ptr<Canvas> canvas = _canvas.lock();
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if (canvas)
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p->signal_event().connect(
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sigc::bind(sigc::mem_fun(canvas.get(), &Canvas::port_event), p));
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p->signal_renamed.connect(sigc::mem_fun(this, &Module::port_renamed));
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}
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/** Embed a widget on the module.
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*
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* Resize may need to be called after this to ensure the module
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* displays correctly.
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*/
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void
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Module::embed(Gtk::Container* widget)
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{
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if (!widget) {
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delete _embed_item;
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_embed_item = NULL;
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_embed_width = 0;
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_embed_height = 0;
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return;
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} else {
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_embed_container = manage(widget);
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}
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_embed_container->set_border_width(2);
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_embed_container->show_all();
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const double y = 4 + _title_height;
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delete _embed_item;
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_embed_item = new Gnome::Canvas::Widget(*this, 2.0, y, *_embed_container);
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_embed_item->show();
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Gtk::Requisition r = _embed_container->size_request();
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embed_size_request(&r, true);
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_embed_item->raise_to_top();
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_embed_container->signal_size_request().connect(sigc::bind(
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sigc::mem_fun(this, &Module::embed_size_request), false));
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}
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void
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Module::embed_size_request(Gtk::Requisition* r, bool force)
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{
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if (!force && _embed_width == r->width && _embed_height == r->height)
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return;
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_embed_width = r->width;
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_embed_height = r->height;
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resize();
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Gtk::Allocation allocation;
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allocation.set_width(r->width + 4);
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allocation.set_height(r->height + 4);
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_embed_container->size_allocate(allocation);
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_embed_item->property_width() = r->width - 4;
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_embed_item->property_height() = r->height;
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}
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void
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Module::measure_ports()
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{
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_widest_input = 0.0;
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_widest_output = 0.0;
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for (PortVector::iterator pi = _ports.begin(); pi != _ports.end(); ++pi) {
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const boost::shared_ptr<Port> p = (*pi);
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p->show_label(_show_port_labels);
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if (p->is_input()) {
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_widest_input = 0.0;
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for (PortVector::iterator pi = _ports.begin(); pi != _ports.end(); ++pi)
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if ((*pi)->natural_width() > _widest_input)
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_widest_input = (*pi)->natural_width();
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} else {
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_widest_output = 0.0;
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for (PortVector::iterator pi = _ports.begin(); pi != _ports.end(); ++pi)
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if ((*pi)->natural_width() > _widest_output)
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_widest_output = (*pi)->natural_width();
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}
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|
}
|
|
}
|
|
|
|
|
|
/** Resize the module to fit its contents best.
|
|
*/
|
|
void
|
|
Module::resize()
|
|
{
|
|
boost::shared_ptr<Canvas> canvas = _canvas.lock();
|
|
if (!canvas)
|
|
return;
|
|
|
|
switch (canvas->direction()) {
|
|
case Canvas::HORIZONTAL:
|
|
resize_horiz();
|
|
break;
|
|
case Canvas::VERTICAL:
|
|
resize_vert();
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
Module::resize_horiz()
|
|
{
|
|
if (_port_renamed) {
|
|
measure_ports();
|
|
_port_renamed = false;
|
|
}
|
|
|
|
// The amount of space between a port edge and the module edge (on the
|
|
// side that the port isn't right on the edge).
|
|
const double hor_pad = (_title_visible ? 10.0 : 20.0);
|
|
|
|
double width = (_title_visible ? _title_width + 10.0 : 1.0);
|
|
|
|
if (_icon_box)
|
|
width += _icon_size + 2;
|
|
|
|
// Title is wide, put inputs and outputs beside each other
|
|
bool horiz = (_widest_input + _widest_output + 10.0 < std::max(width, _embed_width));
|
|
|
|
// Fit ports to module (or vice-versa)
|
|
double widest_in = _widest_input;
|
|
double widest_out = _widest_output;
|
|
double expand_w = (horiz ? (width / 2.0) : width) - hor_pad;
|
|
if (_show_port_labels) {
|
|
widest_in = (_embed_item ? _widest_input : std::max(_widest_input, expand_w));
|
|
widest_out = (_embed_item ? _widest_output : std::max(_widest_output, expand_w));
|
|
}
|
|
|
|
const double widest = std::max(widest_in, widest_out);
|
|
|
|
double above_w = std::max(width, widest + hor_pad);
|
|
double between_w = std::max(width, widest_in + widest_out + _embed_width);
|
|
|
|
above_w = std::max(above_w, _embed_width);
|
|
|
|
// Basic height contains title, icon
|
|
double header_height = 2.0;
|
|
if (_show_port_labels) {
|
|
if (_title_visible)
|
|
header_height += 2 + _title_height;
|
|
if (_icon_box && _icon_size > _title_height)
|
|
header_height += _icon_size - _title_height;
|
|
}
|
|
|
|
double height;// = header_height;
|
|
|
|
//double above_h = 0.0f;
|
|
//if (_ports.size() > 0)
|
|
// above_h += _ports.size() * ((*_ports.begin())->height()+2.0);
|
|
|
|
//double between_h = std::max(above_h, _embed_height);
|
|
//above_h += _embed_height;
|
|
|
|
/*cerr << above_w << "x" << above_h << "(" << above_w * above_h << ") ? "
|
|
<< between_w << "x" << between_h << "(" << between_w * between_h << ")" << endl;*/
|
|
|
|
// Decide where to place embedded widget if necessary)
|
|
enum { BETWEEN, ABOVE } embed_pos = ABOVE;
|
|
//if (above_w * above_h >= between_w * between_h) // minimize area
|
|
if (_embed_width < _embed_height * 2.0) {
|
|
embed_pos = BETWEEN;
|
|
width = between_w;
|
|
if (_embed_item)
|
|
_embed_item->property_x() = widest_in;
|
|
} else {
|
|
width = above_w;
|
|
if (_embed_item)
|
|
_embed_item->property_x() = 0.0f;
|
|
}
|
|
|
|
if (!_title_visible) {
|
|
//if (_ports.size() > 0)
|
|
// height += 0.5;
|
|
if (_widest_input == 0.0 || _widest_output == 0.0f)
|
|
width += 10.0;
|
|
}
|
|
|
|
width += _border_width * 2.0;
|
|
|
|
// Actually set width and height
|
|
set_width(width);
|
|
|
|
// Offset ports below embedded widget
|
|
if (embed_pos == ABOVE) {
|
|
header_height += _embed_height;
|
|
}
|
|
|
|
// Move ports to appropriate locations
|
|
int i = 0;
|
|
bool last_was_input = false;
|
|
double y = 0.0;
|
|
double h = 0.0;
|
|
for (PortVector::iterator pi = _ports.begin(); pi != _ports.end(); ++pi) {
|
|
const boost::shared_ptr<Port> p = (*pi);
|
|
h = p->height();
|
|
|
|
if (p->is_input()) {
|
|
y = header_height + (i * (h + 1.0));
|
|
++i;
|
|
p->set_width(widest_in);
|
|
p->property_x() = -0.5;
|
|
p->property_y() = y;
|
|
last_was_input = true;
|
|
} else {
|
|
if (!horiz || !last_was_input) {
|
|
y = header_height + (i * (h + 1.0));
|
|
++i;
|
|
}
|
|
p->set_width(widest_out);
|
|
p->property_x() = _width - p->width() + 0.5;
|
|
p->property_y() = y;
|
|
last_was_input = false;
|
|
}
|
|
|
|
(*pi)->move_connections();
|
|
}
|
|
|
|
if (_ports.empty())
|
|
h += header_height;
|
|
|
|
height = y + h + 2.0;
|
|
if (_embed_item && embed_pos == BETWEEN)
|
|
height = std::max(height, _embed_height + header_height + 2.0);
|
|
|
|
set_height(height);
|
|
|
|
if (_title_visible) {
|
|
if (_show_port_labels)
|
|
_canvas_title.property_y() = _title_height / 2.0;
|
|
else
|
|
_canvas_title.property_y() = (_height / 2.0) - 1.0;
|
|
if (_icon_box)
|
|
_canvas_title.property_x() = _icon_size + (_width - _icon_size + 1)/2.0;
|
|
else
|
|
_canvas_title.property_x() = _width/2.0;
|
|
}
|
|
|
|
// Make things actually move to their new locations (?!)
|
|
move(0, 0);
|
|
}
|
|
|
|
|
|
void
|
|
Module::resize_vert()
|
|
{
|
|
if (_port_renamed) {
|
|
measure_ports();
|
|
_port_renamed = false;
|
|
}
|
|
|
|
double width = (_title_visible
|
|
? _canvas_title.property_text_width() + 10.0
|
|
: 1.0);
|
|
|
|
if (_icon_box)
|
|
width += _icon_size + 2;
|
|
|
|
double height = 4.0;
|
|
if (_show_port_labels) {
|
|
if (_title_visible)
|
|
height += 2 + _title_height;
|
|
if (_icon_box && _icon_size > _title_height)
|
|
height += _icon_size - _title_height;
|
|
}
|
|
|
|
height += MODULE_EMPTY_PORT_DEPTH * 4.0;
|
|
|
|
// Move ports to appropriate locations
|
|
int i = 0;
|
|
bool last_was_input = false;
|
|
double x = 0.0;
|
|
static const double PAD = 2.0;
|
|
for (PortVector::iterator pi = _ports.begin(); pi != _ports.end(); ++pi) {
|
|
const boost::shared_ptr<Port> p = (*pi);
|
|
p->set_width(MODULE_EMPTY_PORT_BREADTH);
|
|
p->set_height(MODULE_EMPTY_PORT_DEPTH);
|
|
if (p->is_input()) {
|
|
x = PAD + (i * (MODULE_EMPTY_PORT_BREADTH + 1.0));
|
|
++i;
|
|
p->property_x() = x;
|
|
p->property_y() = -0.5;
|
|
last_was_input = true;
|
|
} else {
|
|
if (!last_was_input) {
|
|
x = PAD + (i * (MODULE_EMPTY_PORT_BREADTH + 1.0));
|
|
++i;
|
|
}
|
|
p->property_x() = x;
|
|
p->property_y() = height - p->height() + 0.5;
|
|
last_was_input = false;
|
|
}
|
|
|
|
(*pi)->move_connections();
|
|
}
|
|
|
|
x += MODULE_EMPTY_PORT_BREADTH;
|
|
|
|
if (x > width - 2.0)
|
|
width = x + 2.0;
|
|
|
|
set_width(width);
|
|
set_height(height);
|
|
|
|
if (_title_visible) {
|
|
_canvas_title.property_y() = (_height / 2.0) - 1.0;
|
|
_canvas_title.property_x() = (_width / 2.0);
|
|
}
|
|
|
|
// Make things actually move to their new locations (?!)
|
|
move(0, 0);
|
|
}
|
|
|
|
|
|
void
|
|
Module::set_show_port_labels(bool b)
|
|
{
|
|
boost::shared_ptr<Canvas> canvas = _canvas.lock();
|
|
if (!canvas)
|
|
return;
|
|
|
|
if (canvas->direction() == Canvas::VERTICAL)
|
|
b = false; // can't show labels in vertical mode
|
|
|
|
_show_port_labels = b;
|
|
_port_renamed = true; // remeasure
|
|
|
|
resize();
|
|
}
|
|
|
|
|
|
/** Expand the canvas if the module is outside bounds.
|
|
*/
|
|
void
|
|
Module::fit_canvas()
|
|
{
|
|
boost::shared_ptr<Canvas> canvas = _canvas.lock();
|
|
if (canvas) {
|
|
double canvas_width = canvas->width();
|
|
double canvas_height = canvas->height();
|
|
|
|
canvas_width = std::max(canvas_width, property_x() + _width + 5.0);
|
|
canvas_height = std::max(canvas_height, property_y() + _height + 5.0);
|
|
|
|
canvas->resize(canvas_width, canvas_height);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
Module::select_tick()
|
|
{
|
|
boost::shared_ptr<Canvas> canvas = _canvas.lock();
|
|
if (canvas)
|
|
_module_box.property_dash() = canvas->select_dash();
|
|
}
|
|
|
|
|
|
void
|
|
Module::set_border_color(uint32_t c)
|
|
{
|
|
_border_color = c;
|
|
_module_box.property_outline_color_rgba() = _border_color;
|
|
}
|
|
|
|
|
|
void
|
|
Module::set_default_base_color()
|
|
{
|
|
_color = MODULE_FILL_COLOUR;
|
|
_module_box.property_fill_color_rgba() = _color;
|
|
if (_stacked_border)
|
|
_stacked_border->property_fill_color_rgba() = _color;
|
|
}
|
|
|
|
|
|
void
|
|
Module::set_base_color(uint32_t c)
|
|
{
|
|
_color = c;
|
|
_module_box.property_fill_color_rgba() = _color;
|
|
if (_stacked_border)
|
|
_stacked_border->property_fill_color_rgba() = _color;
|
|
}
|
|
|
|
|
|
} // namespace FlowCanvas
|
|
|