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When dragging the summary viewbox with a click outside the viewbox, clamp x and y 

if the drag started below/above or to the left/right of the box, respectively.
Also scale maximum track height in the summary according to the summary's height.


git-svn-id: svn://localhost/ardour2/branches/3.0@6504 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Carl Hetherington 2010-01-16 00:44:56 +00:00
parent d73d3f3652
commit 5bdc03ab5c
2 changed files with 33 additions and 6 deletions
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34
gtk2_ardour/editor_summary.cc
View File

@ -153,11 +153,10 @@ EditorSummary::render (cairo_t* cr)
_y_scale = static_cast<double> (_height) / h;
/* tallest a region should ever be in the summary, in pixels */
int const tallest_region_pixels = 4;
int const tallest_region_pixels = _height / 16;
if (max_height * _y_scale > tallest_region_pixels) {
_y_scale = static_cast<double> (tallest_region_pixels) / max_height;
}
/* render regions */
@ -292,6 +291,22 @@ EditorSummary::on_button_press_event (GdkEventButton* ev)
_start_mouse_x = ev->x;
_start_mouse_y = ev->y;
if (
_start_editor_x.first <= _start_mouse_x && _start_mouse_x <= _start_editor_x.second &&
_start_editor_y.first <= _start_mouse_y && _start_mouse_y <= _start_editor_y.second
) {
_start_position = IN_VIEWBOX;
} else if (_start_editor_x.first <= _start_mouse_x && _start_mouse_x <= _start_editor_x.second) {
_start_position = BELOW_OR_ABOVE_VIEWBOX;
} else {
_start_position = TO_LEFT_OR_RIGHT_OF_VIEWBOX;
}
if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
/* primary-modifier-click: start a zoom drag */
@ -358,10 +373,17 @@ EditorSummary::on_motion_notify_event (GdkEventMotion* ev)
_moved = true;
xr.first += ev->x - _start_mouse_x;
xr.second += ev->x - _start_mouse_x;
yr.first += ev->y - _start_mouse_y;
yr.second += ev->y - _start_mouse_y;
/* don't alter x if we clicked outside and above or below the viewbox */
if (_start_position == IN_VIEWBOX || _start_position == TO_LEFT_OR_RIGHT_OF_VIEWBOX) {
xr.first += ev->x - _start_mouse_x;
xr.second += ev->x - _start_mouse_x;
}
/* don't alter y if we clicked outside and to the left or right of the viewbox */
if (_start_position == IN_VIEWBOX || _start_position == BELOW_OR_ABOVE_VIEWBOX) {
yr.first += ev->y - _start_mouse_y;
yr.second += ev->y - _start_mouse_y;
}
if (xr.first < 0) {
xr.second -= xr.first;

5
gtk2_ardour/editor_summary.h
View File

@ -70,6 +70,11 @@ private:
std::pair<double, double> _start_editor_y;
double _start_mouse_x;
double _start_mouse_y;
enum {
IN_VIEWBOX,
BELOW_OR_ABOVE_VIEWBOX,
TO_LEFT_OR_RIGHT_OF_VIEWBOX
} _start_position;
bool _move_dragging;
double _x_offset;