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Diffstat (limited to 'gtk2_ardour/editor_canvas.cc')
-rw-r--r--gtk2_ardour/editor_canvas.cc165
1 files changed, 120 insertions, 45 deletions
diff --git a/gtk2_ardour/editor_canvas.cc b/gtk2_ardour/editor_canvas.cc
index 1b0e7a1257..68faff59b8 100644
--- a/gtk2_ardour/editor_canvas.cc
+++ b/gtk2_ardour/editor_canvas.cc
@@ -552,47 +552,52 @@ Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
}
void
-Editor::maybe_autoscroll (GdkEvent* event)
+Editor::maybe_autoscroll (GdkEventMotion* event)
{
nframes_t rightmost_frame = leftmost_frame + current_page_frames();
nframes_t frame = drag_info.current_pointer_frame;
bool startit = false;
+ double vertical_pos = vertical_adjustment.get_value();
- static int last_autoscroll_direction = 0;
+ autoscroll_y = 0;
+ autoscroll_x = 0;
+
+ if (event->y < vertical_pos) {
+ autoscroll_y = -1;
+ startit = true;
+ }
+
+ if (event->y > vertical_pos + canvas_height) {
+ autoscroll_y = 1;
+ startit = true;
+ }
if (frame > rightmost_frame) {
if (rightmost_frame < max_frames) {
- autoscroll_direction = 1;
+ autoscroll_x = 1;
startit = true;
}
} else if (frame < leftmost_frame) {
-
+
if (leftmost_frame > 0) {
- autoscroll_direction = -1;
+ autoscroll_x = -1;
startit = true;
}
- } else {
-
- if (drag_info.last_pointer_frame > drag_info.current_pointer_frame) {
- autoscroll_direction = -1;
- } else {
- autoscroll_direction = 1;
- }
}
-
- if ((autoscroll_direction != last_autoscroll_direction) || (leftmost_frame < frame < rightmost_frame)) {
+ if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
stop_canvas_autoscroll ();
}
if (startit && autoscroll_timeout_tag < 0) {
- start_canvas_autoscroll (autoscroll_direction);
+ start_canvas_autoscroll (autoscroll_x, autoscroll_y);
}
- last_autoscroll_direction = autoscroll_direction;
+ last_autoscroll_x = autoscroll_x;
+ last_autoscroll_y = autoscroll_y;
}
gint
@@ -608,21 +613,64 @@ Editor::autoscroll_canvas ()
nframes_t limit = max_frames - current_page_frames();
GdkEventMotion ev;
nframes_t target_frame;
+ double new_pixel;
+ double target_pixel;
- if (autoscroll_direction < 0) {
- if (leftmost_frame < autoscroll_distance) {
+ if (autoscroll_x < 0) {
+ if (leftmost_frame < autoscroll_x_distance) {
new_frame = 0;
} else {
- new_frame = leftmost_frame - autoscroll_distance;
+ new_frame = leftmost_frame - autoscroll_x_distance;
}
- target_frame = drag_info.current_pointer_frame - autoscroll_distance;
- } else {
- if (leftmost_frame > limit - autoscroll_distance) {
+ target_frame = drag_info.current_pointer_frame - autoscroll_x_distance;
+ } else if (autoscroll_x > 0) {
+ if (leftmost_frame > limit - autoscroll_x_distance) {
new_frame = limit;
} else {
- new_frame = leftmost_frame + autoscroll_distance;
+ new_frame = leftmost_frame + autoscroll_x_distance;
+ }
+ target_frame = drag_info.current_pointer_frame + autoscroll_x_distance;
+ } else {
+ target_frame = drag_info.current_pointer_frame;
+ new_frame = leftmost_frame;
+ }
+
+ double vertical_pos = vertical_adjustment.get_value();
+
+ if (autoscroll_y < 0) {
+
+ if (vertical_pos < autoscroll_y_distance) {
+ new_pixel = 0;
+ } else {
+ new_pixel = vertical_pos - autoscroll_y_distance;
+ }
+
+ target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
+ target_pixel = max (target_pixel, 0.0);
+
+ } else if (autoscroll_y > 0) {
+
+ double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
+
+ if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
+ new_pixel = full_canvas_height;
+ } else {
+ new_pixel = vertical_pos + autoscroll_y_distance;
}
- target_frame = drag_info.current_pointer_frame + autoscroll_distance;
+
+ new_pixel = min (top_of_bottom_of_canvas, new_pixel);
+
+ target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
+
+ /* don't move to the full canvas height because the item will be invisible
+ (its top edge will line up with the bottom of the visible canvas.
+ */
+
+ target_pixel = min (target_pixel, full_canvas_height - 10);
+
+ } else {
+ target_pixel = drag_info.current_pointer_y;
+ new_pixel = vertical_pos;
}
/* now fake a motion event to get the object that is being dragged to move too */
@@ -630,10 +678,10 @@ Editor::autoscroll_canvas ()
ev.type = GDK_MOTION_NOTIFY;
ev.state &= Gdk::BUTTON1_MASK;
ev.x = frame_to_unit (target_frame);
- ev.y = drag_info.current_pointer_y;
+ ev.y = target_pixel;
motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
- if (new_frame == 0 || new_frame == limit) {
+ if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
/* we are done */
return false;
}
@@ -653,29 +701,54 @@ Editor::autoscroll_canvas ()
reset_x_origin (new_frame);
}
- if (autoscroll_cnt == 50) { /* 0.5 seconds */
-
- /* after about a while, speed up a bit by changing the timeout interval */
-
- autoscroll_distance = (nframes_t) floor (current_page_frames()/30.0f);
-
- } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
-
- autoscroll_distance = (nframes_t) floor (current_page_frames()/20.0f);
-
- } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
-
- /* after about another while, speed up by increasing the shift per callback */
-
- autoscroll_distance = (nframes_t) floor (current_page_frames()/10.0f);
+ vertical_adjustment.set_value (new_pixel);
+
+ if (autoscroll_x_distance != 0) {
+
+ if (autoscroll_cnt == 50) { /* 0.5 seconds */
+
+ /* after about a while, speed up a bit by changing the timeout interval */
+
+ autoscroll_x_distance = (nframes_t) floor (current_page_frames()/30.0f);
+
+ } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
+
+ autoscroll_x_distance = (nframes_t) floor (current_page_frames()/20.0f);
+
+ } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
+
+ /* after about another while, speed up by increasing the shift per callback */
+
+ autoscroll_x_distance = (nframes_t) floor (current_page_frames()/10.0f);
+
+ }
+ }
- }
+ if (autoscroll_y_distance != 0) {
+
+ if (autoscroll_cnt == 50) { /* 0.5 seconds */
+
+ /* after about a while, speed up a bit by changing the timeout interval */
+
+ autoscroll_y_distance = 10;
+
+ } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
+
+ autoscroll_y_distance = 20;
+
+ } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
+
+ /* after about another while, speed up by increasing the shift per callback */
+
+ autoscroll_y_distance = 40;
+ }
+ }
return true;
}
void
-Editor::start_canvas_autoscroll (int dir)
+Editor::start_canvas_autoscroll (int dx, int dy)
{
if (!session || autoscroll_active) {
return;
@@ -684,8 +757,10 @@ Editor::start_canvas_autoscroll (int dir)
stop_canvas_autoscroll ();
autoscroll_active = true;
- autoscroll_direction = dir;
- autoscroll_distance = (nframes_t) floor (current_page_frames()/50.0);
+ autoscroll_x = dx;
+ autoscroll_y = dy;
+ autoscroll_x_distance = (nframes_t) floor (current_page_frames()/50.0);
+ autoscroll_y_distance = fabs (dy * 5); /* pixels */
autoscroll_cnt = 0;
/* do it right now, which will start the repeated callbacks */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-14 23:40:30 +0000