cinelerra-5.1/cinelerra/maincursor.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "bcsignals.h"
  23 #include "edl.h"
  24 #include "edlsession.h"
  25 #include "localsession.h"
  26 #include "maincursor.h"
  27 #include "mwindow.h"
  28 #include "mwindowgui.h"
  29 #include "timelinepane.h"
  30 #include "trackcanvas.h"
  31
  32
  33 MainCursor::MainCursor(MWindow *mwindow, MWindowGUI *gui)
  34 {
  35         this->mwindow = mwindow;
  36         this->gui = gui;
  37         visible = 0;
  38         active = 0;
  39         playing_back = 0;
  40         pane = 0;
  41 }
  42
  43 MainCursor::MainCursor(MWindow *mwindow, TimelinePane *pane)
  44 {
  45         this->mwindow = mwindow;
  46         this->gui = mwindow->gui;
  47         this->pane = pane;
  48         visible = 0;
  49         active = 0;
  50         playing_back = 0;
  51 }
  52
  53 MainCursor::~MainCursor()
  54 {
  55 }
  56
  57 void MainCursor::create_objects()
  58 {
  59 //      draw();
  60 }
  61
  62 void MainCursor::focus_in_event()
  63 {
  64 }
  65
  66 void MainCursor::focus_out_event()
  67 {
  68         show();
  69         flash();
  70 }
  71
  72 void MainCursor::activate()
  73 {
  74 //printf("MainCursor::activate 1 %d\n", BC_WindowBase::get_resources()->blink_rate);
  75         if(!active)
  76         {
  77                 active = 1;
  78                 gui->set_repeat(BC_WindowBase::get_resources()->blink_rate);
  79         }
  80 }
  81
  82 void MainCursor::deactivate()
  83 {
  84         if(active)
  85         {
  86                 active = 0;
  87                 gui->unset_repeat(BC_WindowBase::get_resources()->blink_rate);
  88                 show();
  89                 flash();
  90         }
  91 }
  92
  93 int MainCursor::repeat_event(int64_t duration)
  94 {
  95         if(!active || !gui->get_has_focus()) return 0;
  96         if(duration != BC_WindowBase::get_resources()->blink_rate) return 0;
  97
  98 // Only flash a single sample selection
  99         if(selectionstart == selectionend)
 100         {
 101                 if(!playing_back || (playing_back && !visible))
 102                 {
 103                         draw(1);
 104                         flash();
 105                 }
 106         }
 107         return 1;
 108 }
 109
 110 void MainCursor::draw(int do_plugintoggles)
 111 {
 112         if(!visible)
 113         {
 114                 selectionstart = mwindow->edl->local_session->get_selectionstart(1);
 115                 selectionend = mwindow->edl->local_session->get_selectionend(1);
 116                 view_start = mwindow->edl->local_session->view_start[pane->number];
 117                 zoom_sample = mwindow->edl->local_session->zoom_sample;
 118 //printf("MainCursor::draw %f %f\n", selectionstart, selectionend);
 119
 120                 pixel1 = Units::to_int64((selectionstart *
 121                         mwindow->edl->session->sample_rate /
 122                         zoom_sample -
 123                         view_start));
 124                 pixel2 = Units::to_int64((selectionend *
 125                         mwindow->edl->session->sample_rate /
 126                         zoom_sample -
 127                         view_start));
 128                 if(pixel1 < -10) pixel1 = -10;
 129                 if(pixel2 > pane->canvas->get_w() + 10)
 130                         pixel2 = pane->canvas->get_w() + 10;
 131                 if(pixel2 < pixel1) pixel2 = pixel1;
 132 //printf("MainCursor::draw 2\n");
 133         }
 134
 135         pane->canvas->set_color(WHITE);
 136         pane->canvas->set_inverse();
 137         pane->canvas->draw_box(pixel1, 0, pixel2 - pixel1 + 1, pane->canvas->get_h());
 138         pane->canvas->set_opaque();
 139         if(do_plugintoggles) pane->canvas->refresh_plugintoggles();
 140         visible = !visible;
 141 }
 142
 143 // Draw the cursor in a new location
 144 void MainCursor::update()
 145 {
 146         int64_t old_pixel1 = pixel1;
 147         int64_t old_pixel2 = pixel2;
 148
 149         if(visible)
 150         {
 151                 hide(0);
 152         }
 153
 154         show(1);
 155         if(old_pixel1 != pixel1 || old_pixel2 != pixel2)
 156                 pane->canvas->flash(old_pixel1,
 157                         0,
 158                         old_pixel2 - old_pixel1 + 1,
 159                         pane->canvas->get_h());
 160         flash();
 161 }
 162
 163
 164 void MainCursor::flash()
 165 {
 166         pane->canvas->flash(pixel1, 0, pixel2 - pixel1 + 1, pane->canvas->get_h());
 167 }
 168
 169 void MainCursor::hide(int do_plugintoggles)
 170 {
 171         if(visible) draw(do_plugintoggles);
 172 }
 173
 174 void MainCursor::show(int do_plugintoggles)
 175 {
 176         if(!visible) draw(do_plugintoggles);
 177 }
 178
 179 // Constitutively redraw the cursor after it is overwritten by a draw
 180 void MainCursor::restore(int do_plugintoggles)
 181 {
 182         if(visible)
 183         {
 184                 draw(do_plugintoggles);
 185                 visible = 1;
 186         }
 187 }