ardour/livetrax
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unfinished tweaks to stereo panner, before a bigger commit of other stuff

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git-svn-id: svn://localhost/ardour2/branches/3.0@8385 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2010-12-30 15:44:22 +00:00
parent b15f48fb30
commit 1f87006509
1 changed files with 23 additions and 7 deletions
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30
gtk2_ardour/stereo_panner.cc
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@ -96,7 +96,8 @@ void
StereoPanner::set_tooltip ()
{
Gtkmm2ext::UI::instance()->set_tip (this,
string_compose (_("0 -> set width to zero\n%4-uparrow -> set width to 100\n%4-downarrow -> set width to -100"),
string_compose (_("0 -> set width to zero (mono)\n%1-uparrow -> set width to 100\n%1-downarrow -> set width to -100"),
Keyboard::secondary_modifier_name()).c_str());
}
@ -173,6 +174,11 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
/* the usable width is reduced from the real width, because we need space for
the two halves of LR boxes that will extend past the actual left/right
positions (indicated by the vertical line segment above them).
*/
double usable_width = width - lr_box_size;
/* compute the centers of the L/R boxes based on the current stereo width */
@ -192,7 +198,7 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
int right;
left = center - pan_spread; // center of left box
right = center + pan_spread; // right of right box
right = center + pan_spread; // center of right box
/* compute & draw the line through the box */
@ -208,7 +214,7 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
cairo_rectangle (cr,
left - half_lr_box,
(lr_box_size/2)+step_down,
half_lr_box+step_down,
lr_box_size, lr_box_size);
cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
cairo_stroke_preserve (cr);
@ -235,7 +241,7 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
cairo_rectangle (cr,
right - half_lr_box,
(lr_box_size/2)+step_down,
half_lr_box+step_down,
lr_box_size, lr_box_size);
cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
cairo_stroke_preserve (cr);
@ -326,13 +332,18 @@ StereoPanner::on_button_press_event (GdkEventButton* ev)
}
}
} else {
if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
width_control->set_value (-1.0); // reset position to reversed full, LR
if (dragging_left) {
width_control->set_value (1.0); // reset width to 100%
} else if (dragging_right) {
width_control->set_value (-1.0); // reset width to inverted 100%
} else {
width_control->set_value (1.0); // reset position to full, LR
width_control->set_value (0); // collapse width to 0%
}
}
dragging = false;
} else {
dragging = true;
}
@ -439,12 +450,17 @@ StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
double current_width = width_control->get_value ();
/* create a detent close to the center */
if (fabs (current_width) < 0.1) {
accumulated_delta += delta;
/* in the detent - have we pulled far enough to escape ? */
if (fabs (accumulated_delta) >= 0.1) {
width_control->set_value (current_width + accumulated_delta);
accumulated_delta = 0;
} else {
/* snap to zero */
width_control->set_value (0);
}
} else {
width_control->set_value (current_width + delta);