#include <iostream>
-#include <gtkmm2ext/pixfader.h>
+#include "gtkmm2ext/pixfader.h"
+#include "gtkmm2ext/keyboard.h"
using namespace Gtkmm2ext;
using namespace Gtk;
using namespace Gdk;
using namespace std;
-PixFader::PixFader (Glib::RefPtr<Pixbuf> base, Glib::RefPtr<Pixbuf> handle, Gtk::Adjustment& adj)
+
+int PixFader::fine_scale_modifier = Keyboard::PrimaryModifier;
+int PixFader::extra_fine_scale_modifier = Keyboard::SecondaryModifier;
+
+PixFader::PixFader (Glib::RefPtr<Pixbuf> belt, Gtk::Adjustment& adj, int orientation, int fader_length)
+
: adjustment (adj),
- base_pixbuf (base),
- handle_pixbuf (handle)
+ pixbuf (belt),
+ _orien(orientation)
{
dragging = false;
default_value = adjustment.get_value();
last_drawn = -1;
- pixrect.x = 0;
- pixrect.y = 0;
- pixrect.width = base_pixbuf->get_width();
- pixrect.height = base_pixbuf->get_height();
- pixheight = pixrect.height;
- unity_y = (int) rint (pixrect.height - (default_value * pixrect.height));
+ view.x = 0;
+ view.y = 0;
+
+ if (orientation == VERT) {
+ view.width = girth = pixbuf->get_width();
+ } else {
+ view.height = girth = pixbuf->get_height();
+ }
- add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK);
+ set_fader_length (fader_length);
+
+ add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK|Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
adjustment.signal_value_changed().connect (mem_fun (*this, &PixFader::adjustment_changed));
adjustment.signal_changed().connect (mem_fun (*this, &PixFader::adjustment_changed));
PixFader::on_expose_event (GdkEventExpose* ev)
{
GdkRectangle intersection;
- GdkRectangle background;
+ int srcx, srcy;
+
+ int const ds = display_span ();
- pixrect.height = display_height ();
+ int offset_into_pixbuf = (int) floor (span / ((float) span / ds));
- background.x = 0;
- background.y = 0;
- background.width = pixrect.width;
- background.height = pixheight - pixrect.height;
+ /* account for fader lengths that are shorter than the fader pixbuf */
+ if (_orien == VERT) {
+ offset_into_pixbuf += pixbuf->get_height() / 2 - view.height;
+ } else {
+ offset_into_pixbuf += pixbuf->get_width() / 2 - view.width;
+ }
+
+ Glib::RefPtr<Gdk::GC> fg_gc (get_style()->get_fg_gc(get_state()));
- if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) {
- get_window()->draw_pixbuf (get_style()->get_fg_gc (get_state()), base_pixbuf,
+ if (gdk_rectangle_intersect (&view, &ev->area, &intersection)) {
+ if (_orien == VERT) {
+ srcx = intersection.x;
+ srcy = offset_into_pixbuf + intersection.y;
+ } else {
+ srcx = offset_into_pixbuf + intersection.x;
+ srcy = intersection.y;
+ }
+ get_window()->draw_pixbuf (fg_gc, pixbuf,
+ srcx, srcy,
intersection.x, intersection.y,
- 0, 0,
intersection.width, intersection.height,
Gdk::RGB_DITHER_NONE, 0, 0);
-
- }
-
- /* recompute the height of the handle area to use X Window's top->bottom coordinate
- system.
- */
-
- pixrect.y = pixheight - pixrect.height;
-
- if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) {
- get_window()->draw_pixbuf(get_style()->get_fg_gc(get_state()), handle_pixbuf,
- intersection.x, intersection.y,
- 0, pixrect.y,
- intersection.width, intersection.height,
- Gdk::RGB_DITHER_NONE, 0, 0);
+
+ get_window()->draw_line (get_style()->get_bg_gc(STATE_ACTIVE), 0, 0, view.width - 1, 0); /* top */
+ get_window()->draw_line (get_style()->get_bg_gc(STATE_ACTIVE), 0, 0, 0, view.height - 1); /* left */
+ get_window()->draw_line (get_style()->get_bg_gc(STATE_NORMAL), view.width - 1, 0, view.width - 1, view.height - 1); /* right */
+ get_window()->draw_line (get_style()->get_bg_gc(STATE_NORMAL), 0, view.height - 1, view.width - 1, view.height - 1); /* bottom */
}
/* always draw the line */
-
- get_window()->draw_line (get_style()->get_fg_gc(get_state()), 0, unity_y, pixrect.width, unity_y);
-
- last_drawn = pixrect.height;
+ if (_orien == VERT) {
+ get_window()->draw_line (fg_gc, 1, unity_loc, girth - 2, unity_loc);
+ } else {
+ get_window()->draw_line (fg_gc, unity_loc, 1, unity_loc, girth - 2);
+ }
+ last_drawn = ds;
return true;
}
void
PixFader::on_size_request (GtkRequisition* req)
{
- req->width = base_pixbuf->get_width();
- req->height = base_pixbuf->get_height ();
+ req->width = view.width;
+ req->height = view.height;
}
bool
{
switch (ev->button) {
case 1:
- if (!(ev->state & Gdk::SHIFT_MASK)) {
- add_modal_grab();
- grab_y = ev->y;
- grab_start = ev->y;
- grab_window = ev->window;
- dragging = true;
- }
+ case 2:
+ add_modal_grab();
+ grab_loc = (_orien == VERT) ? ev->y : ev->x;
+ grab_start = (_orien == VERT) ? ev->y : ev->x;
+ grab_window = ev->window;
+ dragging = true;
break;
default:
break;
bool
PixFader::on_button_release_event (GdkEventButton* ev)
{
- double scale;
-
- if (ev->state & GDK_CONTROL_MASK) {
- if (ev->state & GDK_MOD1_MASK) {
- scale = 0.05;
- } else {
- scale = 0.1;
- }
- } else {
- scale = 1.0;
- }
+ double fract, ev_pos;
+ ev_pos = (_orien == VERT) ? ev->y : ev->x;
+
switch (ev->button) {
case 1:
if (dragging) {
remove_modal_grab();
dragging = false;
- if (ev->y == grab_start) {
+ if (ev_pos == grab_start) {
+
/* no motion - just a click */
- double fract;
-
- if (ev->y < (pixheight/2)) {
- /* near the top */
- fract = 1.0;
+
+ if (ev->state & Keyboard::TertiaryModifier) {
+ adjustment.set_value (default_value);
+ } else if (ev->state & fine_scale_modifier) {
+ adjustment.set_value (adjustment.get_lower());
+ } else if ((_orien == VERT && ev_pos < span - display_span()) || (_orien == HORIZ && ev_pos > span - display_span())) {
+ /* above the current display height, remember X Window coords */
+ adjustment.set_value (adjustment.get_value() + adjustment.get_step_increment());
} else {
- fract = 1.0 - (ev->y - pixheight);
+ adjustment.set_value (adjustment.get_value() - adjustment.get_step_increment());
}
-
- fract = min (1.0, fract);
- fract = max (0.0, fract);
-
- adjustment.set_value (scale * fract * (adjustment.get_upper() - adjustment.get_lower()));
- }
- } else {
- if (ev->state & Gdk::SHIFT_MASK) {
- adjustment.set_value (default_value);
}
+
+ }
+ break;
+
+ case 2:
+ if (dragging) {
+ remove_modal_grab();
+ dragging = false;
+
+ fract = 1.0 - (ev_pos / span); // inverted X Window coordinates, grrr
+
+ fract = min (1.0, fract);
+ fract = max (0.0, fract);
+
+ adjustment.set_value (fract * (adjustment.get_upper() - adjustment.get_lower()));
}
break;
+
default:
break;
}
+
return false;
}
PixFader::on_scroll_event (GdkEventScroll* ev)
{
double scale;
-
- if (ev->state & GDK_CONTROL_MASK) {
- if (ev->state & GDK_MOD1_MASK) {
- scale = 0.05;
+ bool ret = false;
+
+ if (ev->state & fine_scale_modifier) {
+ if (ev->state & extra_fine_scale_modifier) {
+ scale = 0.01;
} else {
- scale = 0.1;
+ scale = 0.05;
}
} else {
- scale = 0.5;
+ scale = 0.25;
}
- switch (ev->direction) {
+ if (_orien == VERT) {
- case GDK_SCROLL_UP:
- /* wheel up */
- adjustment.set_value (adjustment.get_value() + (adjustment.get_page_increment() * scale));
- break;
- case GDK_SCROLL_DOWN:
- /* wheel down */
- adjustment.set_value (adjustment.get_value() - (adjustment.get_page_increment() * scale));
- break;
- default:
- break;
+ /* should left/right scroll affect vertical faders ? */
+
+ switch (ev->direction) {
+
+ case GDK_SCROLL_UP:
+ adjustment.set_value (adjustment.get_value() + (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ case GDK_SCROLL_DOWN:
+ adjustment.set_value (adjustment.get_value() - (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ default:
+ break;
+ }
+ } else {
+
+ /* up/down scrolls should definitely affect horizontal faders
+ because they are so much easier to use
+ */
+
+ switch (ev->direction) {
+
+ case GDK_SCROLL_RIGHT:
+ case GDK_SCROLL_UP:
+ adjustment.set_value (adjustment.get_value() + (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ case GDK_SCROLL_LEFT:
+ case GDK_SCROLL_DOWN:
+ adjustment.set_value (adjustment.get_value() - (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ default:
+ break;
+ }
}
- return false;
+ return ret;
}
bool
PixFader::on_motion_notify_event (GdkEventMotion* ev)
{
if (dragging) {
- double fract;
- double delta;
- double scale;
-
+ double fract, delta, scale, ev_pos;
+ ev_pos = (_orien == VERT) ? ev->y : ev->x;
+ //cerr << "PixFader::on_motion_notify_event() called x:y = " << ev->x << ":" << ev->y;
if (ev->window != grab_window) {
- grab_y = ev->y;
+ grab_loc = ev_pos;
grab_window = ev->window;
return true;
}
- if (ev->state & GDK_CONTROL_MASK) {
- if (ev->state & GDK_MOD1_MASK) {
+ if (ev->state & fine_scale_modifier) {
+ if (ev->state & extra_fine_scale_modifier) {
scale = 0.05;
} else {
scale = 0.1;
} else {
scale = 1.0;
}
+ //cerr << " ev_pos=" << ev_pos << " grab_loc=" << grab_loc;
+ delta = ev_pos - grab_loc;
+ grab_loc = ev_pos;
- delta = ev->y - grab_y;
- grab_y = ev->y;
-
- fract = (delta / pixheight);
+ fract = (delta / span);
fract = min (1.0, fract);
fract = max (-1.0, fract);
// X Window is top->bottom for 0..Y
- fract = -fract;
+ if (_orien == VERT) {
+ fract = -fract;
+ }
adjustment.set_value (adjustment.get_value() + scale * fract * (adjustment.get_upper() - adjustment.get_lower()));
+ //cerr << " adj=" << adjustment.get_value() << " fract=" << fract << " delta=" << delta << " scale=" << scale << endl;
}
return true;
void
PixFader::adjustment_changed ()
{
- if (display_height() != last_drawn) {
+ if (display_span() != last_drawn) {
queue_draw ();
}
}
+
+/** @return pixel offset of the current value from the right or bottom of the fader */
+int
+PixFader::display_span ()
+{
+ float fract = (adjustment.get_upper() - adjustment.get_value ()) / ((adjustment.get_upper() - adjustment.get_lower()));
+ return (_orien == VERT) ? (int)floor (span * (1.0 - fract)) : (int)floor (span * fract);
+}
+
+void
+PixFader::set_fader_length (int l)
+{
+ if (_orien == VERT) {
+ view.height = span = l;
+ unity_loc = (int) rint (view.height - (default_value * view.height)) - 1;
+ } else {
+ view.width = span = l;
+ unity_loc = (int) rint (default_value * view.width) - 1;
+ }
+
+ queue_draw ();
+}
+
+bool
+PixFader::on_enter_notify_event (GdkEventCrossing*)
+{
+ Keyboard::magic_widget_grab_focus ();
+ return false;
+}
+
+bool
+PixFader::on_leave_notify_event (GdkEventCrossing*)
+{
+ Keyboard::magic_widget_drop_focus();
+ return false;
+}
projects / ardour.git / blobdiff