git-svn-id: svn://localhost/ardour2/trunk@971 d708f5d6-7413-0410-9779-e7cbd77b26cf
514 lines
12 KiB
C++
514 lines
12 KiB
C++
/*
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Copyright (C) 2003 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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$Id$
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*/
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#include <cstdlib>
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#include <cctype>
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#include <fstream>
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#include <sys/stat.h>
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#include <libart_lgpl/art_misc.h>
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#include <gtkmm/window.h>
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#include <gtkmm/combo.h>
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#include <gtkmm/label.h>
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#include <gtkmm/paned.h>
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#include <gtk/gtkpaned.h>
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#include <gtkmm2ext/utils.h>
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#include <ardour/ardour.h>
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#include "ardour_ui.h"
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#include "keyboard.h"
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#include "utils.h"
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#include "i18n.h"
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#include "rgb_macros.h"
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#include "canvas_impl.h"
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using namespace std;
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using namespace Gtk;
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using namespace sigc;
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using namespace Glib;
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using namespace PBD;
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ustring
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fit_to_pixels (const ustring& str, int pixel_width, Pango::FontDescription& font, int& actual_width)
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{
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Label foo;
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Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout ("");
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layout->set_font_description (font);
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actual_width = 0;
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ustring ustr = str;
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ustring::iterator last = ustr.end();
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--last; /* now points at final entry */
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while (!ustr.empty()) {
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layout->set_text (ustr);
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int width, height;
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Gtkmm2ext::get_ink_pixel_size (layout, width, height);
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if (width < pixel_width) {
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actual_width = width;
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break;
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}
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ustr.erase (last--);
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}
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return ustr;
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}
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gint
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just_hide_it (GdkEventAny *ev, Gtk::Window *win)
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{
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win->hide_all ();
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return TRUE;
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}
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/* xpm2rgb copied from nixieclock, which bore the legend:
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nixieclock - a nixie desktop timepiece
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Copyright (C) 2000 Greg Ercolano, erco@3dsite.com
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and was released under the GPL.
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*/
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unsigned char*
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xpm2rgb (const char** xpm, uint32_t& w, uint32_t& h)
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{
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static long vals[256], val;
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uint32_t t, x, y, colors, cpp;
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unsigned char c;
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unsigned char *savergb, *rgb;
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// PARSE HEADER
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if ( sscanf(xpm[0], "%u%u%u%u", &w, &h, &colors, &cpp) != 4 ) {
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error << string_compose (_("bad XPM header %1"), xpm[0])
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<< endmsg;
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return 0;
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}
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savergb = rgb = (unsigned char*)art_alloc (h * w * 3);
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// LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
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for (t = 0; t < colors; ++t) {
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sscanf (xpm[t+1], "%c c #%lx", &c, &val);
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vals[c] = val;
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}
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// COLORMAP -> RGB CONVERSION
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// Get low 3 bytes from vals[]
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//
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const char *p;
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for (y = h-1; y > 0; --y) {
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for (p = xpm[1+colors+(h-y-1)], x = 0; x < w; x++, rgb += 3) {
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val = vals[(int)*p++];
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*(rgb+2) = val & 0xff; val >>= 8; // 2:B
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*(rgb+1) = val & 0xff; val >>= 8; // 1:G
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*(rgb+0) = val & 0xff; // 0:R
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}
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}
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return (savergb);
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}
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unsigned char*
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xpm2rgba (const char** xpm, uint32_t& w, uint32_t& h)
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{
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static long vals[256], val;
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uint32_t t, x, y, colors, cpp;
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unsigned char c;
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unsigned char *savergb, *rgb;
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char transparent;
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// PARSE HEADER
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if ( sscanf(xpm[0], "%u%u%u%u", &w, &h, &colors, &cpp) != 4 ) {
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error << string_compose (_("bad XPM header %1"), xpm[0])
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<< endmsg;
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return 0;
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}
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savergb = rgb = (unsigned char*)art_alloc (h * w * 4);
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// LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
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if (strstr (xpm[1], "None")) {
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sscanf (xpm[1], "%c", &transparent);
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t = 1;
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} else {
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transparent = 0;
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t = 0;
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}
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for (; t < colors; ++t) {
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sscanf (xpm[t+1], "%c c #%lx", &c, &val);
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vals[c] = val;
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}
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// COLORMAP -> RGB CONVERSION
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// Get low 3 bytes from vals[]
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//
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const char *p;
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for (y = h-1; y > 0; --y) {
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char alpha;
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for (p = xpm[1+colors+(h-y-1)], x = 0; x < w; x++, rgb += 4) {
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if (transparent && (*p++ == transparent)) {
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alpha = 0;
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val = 0;
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} else {
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alpha = 255;
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val = vals[(int)*p];
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}
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*(rgb+3) = alpha; // 3: alpha
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*(rgb+2) = val & 0xff; val >>= 8; // 2:B
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*(rgb+1) = val & 0xff; val >>= 8; // 1:G
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*(rgb+0) = val & 0xff; // 0:R
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}
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}
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return (savergb);
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}
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ArdourCanvas::Points*
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get_canvas_points (string who, uint32_t npoints)
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{
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// cerr << who << ": wants " << npoints << " canvas points" << endl;
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#ifdef TRAP_EXCESSIVE_POINT_REQUESTS
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if (npoints > (uint32_t) gdk_screen_width() + 4) {
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abort ();
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}
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#endif
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return new ArdourCanvas::Points (npoints);
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}
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Pango::FontDescription
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get_font_for_style (string widgetname)
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{
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Gtk::Window window (WINDOW_TOPLEVEL);
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Gtk::Label foobar;
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Glib::RefPtr<Gtk::Style> style;
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window.add (foobar);
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foobar.set_name (widgetname);
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foobar.ensure_style();
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style = foobar.get_style ();
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return style->get_font();
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}
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gint
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pane_handler (GdkEventButton* ev, Gtk::Paned* pane)
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{
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if (ev->window != Gtkmm2ext::get_paned_handle (*pane)) {
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return FALSE;
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}
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if (Keyboard::is_delete_event (ev)) {
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gint pos;
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gint cmp;
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pos = pane->get_position ();
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if (dynamic_cast<VPaned*>(pane)) {
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cmp = pane->get_height();
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} else {
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cmp = pane->get_width();
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}
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/* we have to use approximations here because we can't predict the
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exact position or sizes of the pane (themes, etc)
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*/
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if (pos < 10 || abs (pos - cmp) < 10) {
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/* already collapsed: restore it (note that this is cast from a pointer value to int, which is tricky on 64bit */
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pane->set_position ((intptr_t) pane->get_data ("rpos"));
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} else {
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int collapse_direction;
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/* store the current position */
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pane->set_data ("rpos", (gpointer) pos);
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/* collapse to show the relevant child in full */
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collapse_direction = (intptr_t) pane->get_data ("collapse-direction");
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if (collapse_direction) {
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pane->set_position (1);
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} else {
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if (dynamic_cast<VPaned*>(pane)) {
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pane->set_position (pane->get_height());
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} else {
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pane->set_position (pane->get_width());
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}
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}
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}
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return TRUE;
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}
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return FALSE;
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}
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uint32_t
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rgba_from_style (string style, uint32_t r, uint32_t g, uint32_t b, uint32_t a, string attr, int state, bool rgba)
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{
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/* In GTK+2, styles aren't set up correctly if the widget is not
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attached to a toplevel window that has a screen pointer.
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*/
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static Gtk::Window* window = 0;
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if (window == 0) {
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window = new Window (WINDOW_TOPLEVEL);
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}
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Gtk::Label foo;
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window->add (foo);
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foo.set_name (style);
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foo.ensure_style ();
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GtkRcStyle* waverc = foo.get_style()->gobj()->rc_style;
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if (waverc) {
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if (attr == "fg") {
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r = waverc->fg[state].red / 257;
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g = waverc->fg[state].green / 257;
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b = waverc->fg[state].blue / 257;
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/* what a hack ... "a" is for "active" */
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if (state == Gtk::STATE_NORMAL && rgba) {
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a = waverc->fg[GTK_STATE_ACTIVE].red / 257;
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}
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} else if (attr == "bg") {
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r = g = b = 0;
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r = waverc->bg[state].red / 257;
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g = waverc->bg[state].green / 257;
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b = waverc->bg[state].blue / 257;
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} else if (attr == "base") {
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r = waverc->base[state].red / 257;
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g = waverc->base[state].green / 257;
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b = waverc->base[state].blue / 257;
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} else if (attr == "text") {
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r = waverc->text[state].red / 257;
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g = waverc->text[state].green / 257;
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b = waverc->text[state].blue / 257;
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}
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} else {
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warning << string_compose (_("missing RGBA style for \"%1\""), style) << endl;
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}
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window->remove ();
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if (state == Gtk::STATE_NORMAL && rgba) {
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return (uint32_t) RGBA_TO_UINT(r,g,b,a);
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} else {
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return (uint32_t) RGB_TO_UINT(r,g,b);
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}
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}
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bool
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canvas_item_visible (ArdourCanvas::Item* item)
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{
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return (item->gobj()->object.flags & GNOME_CANVAS_ITEM_VISIBLE) ? true : false;
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}
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void
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set_color (Gdk::Color& c, int rgb)
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{
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c.set_rgb((rgb >> 16)*256, ((rgb & 0xff00) >> 8)*256, (rgb & 0xff)*256);
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}
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bool
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key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev)
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{
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GtkWindow* win = window.gobj();
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GtkWidget* focus = gtk_window_get_focus (win);
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bool special_handling_of_unmodified_accelerators = false;
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if (focus) {
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if (GTK_IS_ENTRY(focus)) {
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special_handling_of_unmodified_accelerators = true;
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}
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}
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/* This exists to allow us to override the way GTK handles
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key events. The normal sequence is:
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a) event is delivered to a GtkWindow
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b) accelerators/mnemonics are activated
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c) if (b) didn't handle the event, propagate to
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the focus widget and/or focus chain
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The problem with this is that if the accelerators include
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keys without modifiers, such as the space bar or the
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letter "e", then pressing the key while typing into
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a text entry widget results in the accelerator being
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activated, instead of the desired letter appearing
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in the text entry.
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There is no good way of fixing this, but this
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represents a compromise. The idea is that
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key events involving modifiers (not Shift)
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get routed into the activation pathway first, then
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get propagated to the focus widget if necessary.
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If the key event doesn't involve modifiers,
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we deliver to the focus widget first, thus allowing
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it to get "normal text" without interference
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from acceleration.
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Of course, this can also be problematic: if there
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is a widget with focus, then it will swallow
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all "normal text" accelerators.
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*/
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if (!special_handling_of_unmodified_accelerators) {
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/* pretend that certain key events that GTK does not allow
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to be used as accelerators are actually something that
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it does allow.
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*/
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int ret = false;
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switch (ev->keyval) {
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case GDK_Up:
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ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_uparrow, GdkModifierType(ev->state));
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break;
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case GDK_Down:
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ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_downarrow, GdkModifierType(ev->state));
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break;
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case GDK_Right:
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ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_rightarrow, GdkModifierType(ev->state));
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break;
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case GDK_Left:
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ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_leftarrow, GdkModifierType(ev->state));
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break;
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default:
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break;
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}
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if (ret) {
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return true;
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}
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}
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if (!special_handling_of_unmodified_accelerators ||
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ev->state & (Gdk::MOD1_MASK|
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Gdk::MOD3_MASK|
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Gdk::MOD4_MASK|
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Gdk::MOD5_MASK|
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Gdk::CONTROL_MASK)) {
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/* no special handling or modifiers in effect: accelerate first */
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if (!gtk_window_activate_key (win, ev)) {
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return gtk_window_propagate_key_event (win, ev);
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} else {
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return true;
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}
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}
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/* no modifiers, propagate first */
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if (!gtk_window_propagate_key_event (win, ev)) {
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return gtk_window_activate_key (win, ev);
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}
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return true;
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}
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Glib::RefPtr<Gdk::Pixbuf>
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get_xpm (std::string name)
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{
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if (!xpm_map[name]) {
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xpm_map[name] = Gdk::Pixbuf::create_from_file (ARDOUR::find_data_file(name, "pixmaps"));
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}
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return (xpm_map[name]);
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}
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Glib::RefPtr<Gdk::Pixbuf>
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get_icon (const char* cname)
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{
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string name = cname;
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name += X_(".png");
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string path = ARDOUR::find_data_file (name, "icons");
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if (path.empty()) {
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fatal << string_compose (_("cannot find icon image for %1"), name) << endmsg;
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/*NOTREACHED*/
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}
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return Gdk::Pixbuf::create_from_file (path);
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}
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string
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longest (vector<string>& strings)
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{
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if (strings.empty()) {
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return string ("");
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}
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vector<string>::iterator longest = strings.begin();
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string::size_type longest_length = (*longest).length();
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vector<string>::iterator i = longest;
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++i;
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while (i != strings.end()) {
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string::size_type len = (*i).length();
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if (len > longest_length) {
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longest = i;
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longest_length = len;
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}
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++i;
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}
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return *longest;
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}
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