mouse_cursors.cc

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/*
    Copyright (C) 2000-2010 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 <gdkmm/cursor.h>

#include "gtkmm2ext/cursors.h"

#include "utils.h"
#include "mouse_cursors.h"
#include "editor_xpms"

using namespace ARDOUR_UI_UTILS;

Gdk::Cursor* MouseCursors::_invalid = 0;

MouseCursors::MouseCursors ()
        : cross_hair (0)
        , scissors (0)
        , trimmer (0)
        , right_side_trim (0)
        , anchored_right_side_trim (0)
        , left_side_trim (0)
        , anchored_left_side_trim (0)
        , right_side_trim_left_only (0)
        , left_side_trim_right_only (0)
        , fade_in (0)
        , fade_out (0)
        , selector (0)
        , grabber (0)
        , grabber_note (0)
        , grabber_edit_point (0)
        , zoom_in (0)
        , zoom_out (0)
        , time_fx (0)
        , fader (0)
        , speaker (0)
        , midi_pencil (0)
        , midi_select (0)
        , midi_resize (0)
        , midi_erase (0)
        , up_down (0)
        , wait (0)
        , timebar (0)
        , transparent (0)
        , resize_left (0)
        , resize_top_left (0)
        , resize_top (0)
        , resize_top_right (0)
        , resize_right (0)
        , resize_bottom_right (0)
        , resize_bottom (0)
        , resize_bottom_left (0)
        , move (0)
        , expand_left_right (0)
        , expand_up_down (0)
{
}

void
MouseCursors::drop_all ()
{
        delete cross_hair; cross_hair = 0;
        delete scissors; scissors = 0;
        delete trimmer; trimmer = 0;
        delete right_side_trim; right_side_trim = 0;
        delete anchored_right_side_trim; anchored_right_side_trim = 0;
        delete left_side_trim; left_side_trim = 0;
        delete anchored_left_side_trim; anchored_left_side_trim = 0;
        delete right_side_trim_left_only; right_side_trim_left_only = 0;
        delete left_side_trim_right_only; left_side_trim_right_only = 0;
        delete fade_in; fade_in = 0;
        delete fade_out; fade_out = 0;
        delete selector; selector = 0;
        delete grabber; grabber = 0;
        delete grabber_note; grabber_note = 0;
        delete grabber_edit_point; grabber_edit_point = 0;
        delete zoom_in; zoom_in = 0;
        delete zoom_out; zoom_out = 0;
        delete time_fx; time_fx = 0;
        delete fader; fader = 0;
        delete speaker; speaker = 0;
        delete midi_pencil; midi_pencil = 0;
        delete midi_select; midi_select = 0;
        delete midi_resize; midi_resize = 0;
        delete midi_erase; midi_erase = 0;
        delete up_down; up_down = 0;
        delete wait; wait = 0;
        delete timebar; timebar = 0;
        delete transparent; transparent = 0;
        delete resize_left; resize_left = 0;
        delete resize_top_left; resize_top_left = 0;
        delete resize_top; resize_top = 0;
        delete resize_top_right; resize_top_right = 0;
        delete resize_right; resize_right = 0;
        delete resize_bottom_right; resize_bottom_right = 0;
        delete resize_bottom; resize_bottom = 0;
        delete resize_bottom_left; resize_bottom_left = 0;
        delete move; move = 0;
        delete expand_left_right; expand_left_right = 0;
        delete expand_up_down; expand_up_down = 0;
}

Gdk::Cursor*
MouseCursors::make_cursor (const char* name, int hotspot_x, int hotspot_y)
{
        Gtkmm2ext::CursorInfo* info = Gtkmm2ext::CursorInfo::lookup_cursor_info (name);

        if (info) {
                hotspot_x = info->x;
                hotspot_y = info->y;
        }

        Glib::RefPtr<Gdk::Pixbuf> p (::get_icon (name, _cursor_set));
        return new Gdk::Cursor (Gdk::Display::get_default(), p, hotspot_x, hotspot_y);
}

void
MouseCursors::set_cursor_set (const std::string& name)
{
        using namespace Glib;
        using namespace Gdk;

        drop_all ();
        Gtkmm2ext::CursorInfo::drop_cursor_info();
        _cursor_set = name;

        std::string hotspot_info_path = get_icon_path ("hotspots", _cursor_set, false);

        if (!hotspot_info_path.empty()) {
                Gtkmm2ext::CursorInfo::load_cursor_info (hotspot_info_path);
        }

        /* these will throw exceptions if their images cannot be found.
           
           the default hotspot coordinates will be overridden by any 
           data found by Gtkmm2ext::Cursors::load_cursor_info(). the values
           here from the set of cursors used by Ardour; new cursor/icon
           sets should come with a hotspot info file.
        */

        zoom_in = make_cursor ("zoom_in_cursor", 10, 5);
        zoom_out = make_cursor ("zoom_out_cursor", 5, 5);
        scissors = make_cursor ("scissors", 5, 0);
        grabber = make_cursor ("grabber", 5, 0);
        grabber_note = make_cursor ("grabber_note", 5, 10);
        grabber_edit_point = make_cursor ("grabber_edit_point", 5, 17);
        left_side_trim = make_cursor ("trim_left_cursor", 5, 11);
        anchored_left_side_trim = make_cursor ("anchored_trim_left_cursor", 5, 11);
        right_side_trim = make_cursor ("trim_right_cursor", 23, 11);
        anchored_right_side_trim = make_cursor ("anchored_trim_right_cursor", 23, 11);
        left_side_trim_right_only = make_cursor ("trim_left_cursor_right_only", 5, 11);
        right_side_trim_left_only = make_cursor ("trim_right_cursor_left_only", 23, 11);
        fade_in = make_cursor ("fade_in_cursor", 0, 0);
        fade_out = make_cursor ("fade_out_cursor", 29, 0);
        resize_left = make_cursor ("resize_left_cursor", 3, 10);
        resize_top_left = make_cursor ("resize_top_left_cursor", 3, 3);
        resize_top = make_cursor ("resize_top_cursor", 10, 3);
        resize_top_right = make_cursor ("resize_top_right_cursor", 18, 3);
        resize_right = make_cursor ("resize_right_cursor", 24, 10);
        resize_bottom_right = make_cursor ("resize_bottom_right_cursor", 18, 18);
        resize_bottom = make_cursor ("resize_bottom_cursor", 10, 24);
        resize_bottom_left = make_cursor ("resize_bottom_left_cursor", 3, 18);
        move = make_cursor ("move_cursor", 11, 11);
        expand_left_right = make_cursor ("expand_left_right_cursor", 11, 4);
        expand_up_down = make_cursor ("expand_up_down_cursor", 4, 11);
        selector = make_cursor ("i_beam_cursor", 4, 11);

        Gdk::Color fbg ("#ffffff");
        Gdk::Color ffg ("#000000");

        {
                RefPtr<Bitmap> source = Bitmap::create ((char const *) fader_cursor_bits, fader_cursor_width, fader_cursor_height);
                RefPtr<Bitmap> mask = Bitmap::create ((char const *) fader_cursor_mask_bits, fader_cursor_width, fader_cursor_height);
                fader = new Cursor (source, mask, ffg, fbg, fader_cursor_x_hot, fader_cursor_y_hot);
        }

        {
                RefPtr<Bitmap> source = Bitmap::create ((char const *) speaker_cursor_bits, speaker_cursor_width, speaker_cursor_height);
                RefPtr<Bitmap> mask = Bitmap::create ((char const *) speaker_cursor_mask_bits, speaker_cursor_width, speaker_cursor_height);
                speaker = new Cursor (source, mask, ffg, fbg, speaker_cursor_width >> 1, speaker_cursor_height >> 1);
        }

        {
                char pix[4] = { 0, 0, 0, 0 };
                RefPtr<Bitmap> bits = Bitmap::create (pix, 2, 2);
                Color c;
                transparent = new Cursor (bits, bits, c, c, 0, 0);
        }

        cross_hair = new Cursor (CROSSHAIR);
        trimmer =  new Cursor (SB_H_DOUBLE_ARROW);
        time_fx = new Cursor (SIZING);
        wait = new Cursor (WATCH);
        timebar = new Cursor(LEFT_PTR);
        midi_pencil = new Cursor (PENCIL);
        midi_select = new Cursor (CENTER_PTR);
        midi_resize = new Cursor (SIZING);
        midi_erase = new Cursor (DRAPED_BOX);
        up_down = new Cursor (SB_V_DOUBLE_ARROW);
}

void
MouseCursors::create_invalid()
{
        char pix[4] = { 0, 0, 0, 0 };
        Glib::RefPtr<Gdk::Bitmap> bits = Gdk::Bitmap::create (pix, 2, 2);
        Gdk::Color c;
        _invalid = new Gdk::Cursor (bits, bits, c, c, 0, 0);
}