From 37b03e353a0513a07924c7e860a33e5ae233b57a Mon Sep 17 00:00:00 2001 From: Johannes Mueller Date: Thu, 20 Jul 2017 23:28:52 +0200 Subject: Put plugin inline display into a freely available class ... ... and let ProcessorBox::PluginInlineDisplay inherit from it. --- gtk2_ardour/plugin_display.cc | 187 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 gtk2_ardour/plugin_display.cc (limited to 'gtk2_ardour/plugin_display.cc') diff --git a/gtk2_ardour/plugin_display.cc b/gtk2_ardour/plugin_display.cc new file mode 100644 index 0000000000..73960b1f6a --- /dev/null +++ b/gtk2_ardour/plugin_display.cc @@ -0,0 +1,187 @@ +/* + Copyright (C) 2017 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 + +#include "gtkmm2ext/colors.h" +#include "gtkmm2ext/gtk_ui.h" +#include "gtkmm2ext/gui_thread.h" +#include "gtkmm2ext/utils.h" + +#include "ui_config.h" + +#include "plugin_display.h" + + + +PluginDisplay::PluginDisplay (boost::shared_ptr p, uint32_t max_height) + : _plug (p) + , _surf (0) + , _max_height (max_height) + , _cur_height (1) + , _scroll (false) +{ + add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK); + _plug->DropReferences.connect (_death_connection, invalidator (*this), boost::bind (&PluginDisplay::plugin_going_away, this), gui_context()); + _plug->QueueDraw.connect (_qdraw_connection, invalidator (*this), + boost::bind (&Gtk::Widget::queue_draw, this), gui_context ()); +} + +PluginDisplay::~PluginDisplay () +{ + if (_surf) { + cairo_surface_destroy (_surf); + } +} + +bool +PluginDisplay::on_button_press_event (GdkEventButton *ev) +{ + return false; +} + +bool +PluginDisplay::on_button_release_event (GdkEventButton *ev) +{ + return false; +} + +void +PluginDisplay::on_size_request (Gtk::Requisition* req) +{ + req->width = 56; + req->height = _cur_height; +} + + +void +PluginDisplay::update_height_alloc (uint32_t height) +{ + uint32_t shm = std::min (_max_height, height); + + Gtk::Container* pr = get_parent(); + for (uint32_t i = 0; i < 4 && pr; ++i) { + // VBox, EventBox, ViewPort, ScrolledWindow + pr = pr->get_parent(); + } + + if (shm != _cur_height) { + if (_cur_height < shm) { + queue_resize (); + } + _cur_height = shm; + } +} + +uint32_t +PluginDisplay::render_inline (cairo_t* cr, uint32_t width) +{ + ARDOUR::Plugin::Display_Image_Surface* dis = _plug->render_inline_display (width, _max_height); + if (!dis) { + return 0; + } + + /* allocate a local image-surface, + * We cannot re-use the data via cairo_image_surface_create_for_data(), + * since pixman keeps a reference to it. + * we'd need to hand over the data and ha cairo_surface_destroy to free it. + * it might be possible to work around via cairo_surface_set_user_data(). + */ + if (!_surf + || dis->width != cairo_image_surface_get_width (_surf) + || dis->height != cairo_image_surface_get_height (_surf) + ) { + if (_surf) { + cairo_surface_destroy (_surf); + } + _surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, dis->width, dis->height); + } + + if (cairo_image_surface_get_stride (_surf) == dis->stride) { + memcpy (cairo_image_surface_get_data (_surf), dis->data, dis->stride * dis->height); + } else { + unsigned char *src = dis->data; + unsigned char *dst = cairo_image_surface_get_data (_surf); + const int dst_stride = cairo_image_surface_get_stride (_surf); + for (int y = 0; y < dis->height; ++y) { + memcpy (dst, src, dis->width * 4 /*ARGB32*/); + src += dis->stride; + dst += dst_stride; + } + } + + cairo_surface_flush(_surf); + cairo_surface_mark_dirty(_surf); + const double xc = floor ((width - dis->width) * .5); + cairo_set_source_surface(cr, _surf, xc, 0); + cairo_paint (cr); + + return dis->height; +} + +bool +PluginDisplay::on_expose_event (GdkEventExpose* ev) +{ + Gtk::Allocation a = get_allocation(); + double const width = a.get_width(); + double const height = a.get_height(); + + cairo_t* cr = gdk_cairo_create (get_window()->gobj()); + cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height); + cairo_clip (cr); + + Gdk::Color const bg = get_style()->get_bg (Gtk::STATE_NORMAL); + cairo_set_source_rgb (cr, bg.get_red_p (), bg.get_green_p (), bg.get_blue_p ()); + cairo_rectangle (cr, 0, 0, width, height); + cairo_fill (cr); + + cairo_save (cr); + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + Gtkmm2ext::rounded_rectangle (cr, .5, -1.5, width - 1, height + 1, 7); + cairo_clip (cr); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + + uint32_t ht = render_inline (cr, width); + cairo_restore (cr); + + if (ht == 0) { + hide (); + if (_cur_height != 1) { + _cur_height = 1; + queue_resize (); + } + cairo_destroy (cr); + return true; + } else { + update_height_alloc (ht); + } + + bool failed = false; + std::string name = get_name(); + Gtkmm2ext::Color fill_color = UIConfiguration::instance().color (string_compose ("%1: fill active", name), &failed); + + Gtkmm2ext::rounded_rectangle (cr, .5, -1.5, width - 1, height + 1, 7); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_set_line_width(cr, 1.0); + Gtkmm2ext::set_source_rgb_a (cr, fill_color, 1.0); + cairo_stroke (cr); + + cairo_destroy(cr); + return true; +} -- cgit v1.2.3